Don't know where to open my online store (PayPal Payflow Link)

Pinnacle Cart is an online ecommerce website that offers:

• Extensive partner program with two variations:

1. Re-branded version under your own name of the products.The only thing you need to do is the marketing.
2. Downloadable version that you can host on your servers. You still pay for the license, but you keep all the control

• Free migration from any shopping site
• Automated Intuit Quickboooks synchroniation
• Fully customizable
• Free trial

Pricing

Start up: $29.95/month

• No transaction fees
• 1GB storage
• 2 GB traffic
• Daily backups
• US-based support
• PCI/PA-DSS compliant (Payment Card Industry - sticking to a set of specific standards that protect card information during transactions; PA-DSS - application data security standard)
• Free migration
• Free setup
• SL starting at $14.95

Small Biz: $59.95/month; everything is the same, except: 3 GB storage and 8GB traffic; Quickbooks auto synchronization

Entrepreneur: $94.95/mohth; everything is the same, except: 10GB storage and 20 GB traffic

ShoppingCart is an ecommerce website that offers:

• Free trial for 26 days
• Email marketing
• Over 16GB of online storage
• Integrated upsells
• All-in-one store
• Pricing of $10/month
• Unlimited products
• Free premium designs
• The possibility of uploading your own design

You can try the Elegant Shop Pro theme for your online business. It is a robust WooCommerce WordPress theme designed for discerning online shopping sites and e-commerce entrepreneurs. 

Perfect for:

• eCommerce
• Entrepreneurs
• Businesses
• Brands
• Online Shops

Elegant shop pro offers:

• Fully responsive design
• Woocommerce compatible 
• Elegant web design 
• Maximum customizability
• Multiple Languages Supports
• Optimized for performance 
• Unique custom page templates
• Modern and elegant design
• Highly customizable
• Lifetime updates
• Incredible support
• Aesthetically appealing design 
• SEO(Search Engine Optimization) friendly
• 900+ google fonts
• One click demo import

Pricing Options:
Elegant Shop Pro:1 Site + Annual Support : $59.00 Only
Elegant Shop Theme + Installation And Setup Service: $99.00 Only

Woocommerce is an open source ecommerce plugin for WordPress, and it can help you to easily build and customize your store by yourself.

Shopify is an ecommerce website that hosts many online stores. They offer:

• Free trial for 14 days
• 50+ integrated payment
• Over 100 unique templates
• No restriction on products for sale
• A completely customizable store
• You can create your own store from scratch by using HTML or CSS
• The platform is mobile friendly
• You can publish and categorize your store as well as moderate the comments of your customers

Pricing

Basic Shopify - $19/month

Shopify - $79/month

Advanced Shopify - $299/month

Features

Basic Shopify includes:

• 2 staff accounts
• unlimited number of products
• unlimited file storage
• Average shipping retail savings - $0.49 per shipping label
• Retail package - $40
• 24/7 support
• Fraud analysis
• Manual order creation
• Discount codes
• Website and blog
• Free SSL certificate (Secure Sockets Layer - a search technique for establishing encrypting links between a web server and a browser)

Shopify and Advanced Shopify include all that, with some exceptions:

• Shopify offers 5 staff accounts; Advanced Shopify 15
• Average shipping retail savings for Shopify - $0.59 per shipping label; for Advanced Shopify $0.78.

Both Shopify and Advanced Shopify include:

• Gift cards
• Professional reports
• Advanced cart recovery

Only Advanced Shopify includes:

• Advanced report building
• Real time carrier shipping

Spree Commerce is an open source ecommerce platform which enables you to be different from your competitors. It offers over 50 paymet gateways, and it comes with Google Analytics. They are offering all this free of charge.

osCommerce is an online store software program that offers its hosting for free. However, it makes it harder to differentiate your store from the others. In order to be noticed, you have to choose among about 6K add-ons that might be useful to you.

Simple Cart is an ecommerce platform that allows you to do various things in order for your shop to be optimized. You can rearrange your items, change the HTML tags, and no need for additional programming. It also supports PayPal and Google Checkout.

AFCommerce is a full online store that is good for you if you are a beginner in internet sales. Its look is simplistic from both customer and owner's side, but that simple design also has its advantages, them being a one-page checkout, for example.

Zen Cart  is an online store management system. It comes with all basic features, such as a newsletter manager, discount coupons, gift certificate, and similar things.

Etsy is an ecommerce website that is ideal for beginners. From there, you can build your first store and advance further. Even though it is not as customizable or flexible as other sites, it is good for ones who are only starting to sell their items online (especially if they are handmade).

One of the interesting features of Etsy is that you can send a private message to the seller, asking in more detail about the product you are interested in, and all the details regarding its purchasing.

Read Etsy's guidleines carefully.

Pricing

You pay 3.5% for every transaction, and one-time fee of $0.20 for each item listed. 

Store Sprite is a shopping cart software that offers many features that you can find on platforms that are not free to use. But the only, so to say, flaw is that it comes with Store Sprite copyright notices, for whose removal you have to pay, if you want to.

Gumroad is an online ecommerce platform that offers:

• Customizable store
• Embedded following form
• Importing of the existing mailing list
• Universal analytics
• 30 days audience building challenge and 10 day product launch program
• Discount codes
• Generating of license keys
• Pay-what-you-want option
• Dollars, Pounds, Euros, Yens, and other currencies
• Sell multiple versions of your product
• Charge for shipping
• Limit product sales by country
• Pre-order both physical and digital products
• You can pick your own release date

Pricing

$10/month, unlimited bandwidth, fee 3.5% + 30 ¢ per charge

Tomato Cart is an open source ecommerce platform that offers features such as:

• RIA based administration panel (graphic user interface, web desktop application, multi-window operation, etc.)
• Content management system (articles, FAQ, slide show, banner manager, administrator role, template installation, Google Adsense)
• Catalog management (unlimited product categories with images, shop by price, filter by popularity, etc.)
• Product management (simple products, virtual products, downloadable products, image groups, watermark, reviews and ratings, etc.)
• Customer management (export/import customers, discount on customer groups, poll, who is online, guest book, department manager)
• Order management (add orders in admin panel, print invoices and packaging lists, store credits, abandoned cart, track order, etc.)
• Payment (Amazon IPN, Authorize.net, PayPal, etc.)
• Shipping (flat rate, free shipping, per item, self pickup, table rate, USPS, zone rates)
• Checkout (one page checkout, guest checkout, gift-wrapping option, etc.)
• Email system (newsletter, email templates, etc.)
• Localization (multilingual options, multiple currencies)
• Search engine optimization (static URLs, meta page in template class, Google sitemap, etc.)
• Statistics and reports (audience demographic reports, activity report, order reports, etc.)
• Promotional tools (specials, cross-sell, upcoming product, featured product, best seller, etc.)
• Technical support (installation wizard, maintenance mode, cache control, backup, etc.)

Rocket Quick Cart is an ecommerce platform that lacks many features, and accepts payments only via PayPal and Google Checkout, but in return you can set your store up in minutes, and, in general, its layout looks good and it has an impressive product image display.

Fetch App is an ecommerce app that can integrate with any platform (BigCommerce, Shopify, etc.).

Pricing:

Free: 5MB storage, unlimited bandwidth

For $5/month: 50MB storage, unlimited bandwidth

For $10/month: 2GB storage, unlimited bandwidth

For $10/month: your own storage, unlimited bandwidth

For $20/month: 5GB storage, unlimited bandwidth

For $30/month: 10GB storage, unlimited bandwidth

For $50/month: 15GB storage, unlimited bandwidth

For $100/month: 35GB storage, unlimited bandwidth

For $150/month: 55GB storage, unlimited bandwidth

For $200/month: 75GB storage, unlimited bandwidth

For $300/month: 100GB storage, unlimited bandwidth

For $500/month: 150GB storage, unlimited bandwidth

Bigcommerce is an ecommerce website that hosts online stores. The site offers many features that can make it easier for you to set up an online store on their site. This includes:

• Migrating your existing store from any platform to theirs during the period 5-10 days
• Complete freedom to customize your store, without any additional coding on your part
• Automated fraud protection
• Purchase of domain names or using existing ones
• SEO with search friendly themes (Search Engine Optimization methods and strategies by which your site gets more visitors)
• Unlimited bandwidth
• Descriptive analysis dashboard
• You can promote your products
• Free trial for 15 days

They are also mobile friendly.

Pricing

For new businesses:

Standard - $25.9/month

Plus - $79.95/month

For high volume businesses:

Pro - $199.95

DPD is the publishing platform that offers 30 day free trial. Here are some of its features:

• It is secure and is PCI compliant (sticking to specific security standards that exist to protect the credit card)
• Multiple stores, one account
• No per-sale fees
• Product hosting and delivery
• Responsive mobile checkout
• PDF stamping and encryption (adding details of the buyer to the bottom of the file so as to make it customizable)
• Key codes
• Tangible goods
• Google Analytics support

Pricing

For $10/month: 1GB storage, 20 products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $16/month: 1.5 GB storage, 30 products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $22/month: 3GB storage, 60 products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $30/month: 6GB storage, 120 products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $45/month: 12.5GB storage, 250 products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $60/month: 25 GB storage, 500 products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $90/month: 37.5GB storage, 750 products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $130/month: 50GB storage, 1000 products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $170/month: 75GB storage, 1.5K products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $200/month: 100GB storage, 2K products, unlimited bandwidth, product sales, customization, 3rd party integrations

For $280/month: 174GB storage, 3.5K products, unlimited bandwidth, product sales, customization, 3rd party integrations

WordPress is an open-source content management system based on PHP. With this you can build your own website or blog. WordPress offers a lot of themes that you can use, and, since it is an open source, you can also do some coding if you want to, in order for your store (website) to look unique, the way you want it to.

WordPress comes in three pricing packages: for free, Premium ($8.25/month, billed yearly), and Business ($24.92/month, billed yearly).

Premium and Business include your custom domain, hundreds of free themes, no ads, and so on.