Once you set up your products in E-junkie Seller Admin, we provide you with ready-made HTML codes for your cart buttons. You would simply copy the codes from us and paste them into the HTML source of your own Web site pages, wherever you want our buttons to appear among your own layout, text and images. It's up to you to build your own site/storefront however you wish; many of our clientele use WordPress to help manage this, and we have some tips for WordPress here:
http://www.e-junkie.com/ej/help.site-blog.htm#wordpress
If you are selling a file download, you would simply upload that file to our server when adding the download product in your E-junkie Seller Admin. After the buyer finishes checkout, and once the payment processor notifies us they have completed the buyer's payment, we grant the buyer access to a thank-you page we automatically generate for their transaction, where we would present their unique download link(s). We also send the buyer a thank-you email message with a link to reach their thank-you/download page in case they did not proceed there after checkout. Every download link we issue expires after the number of Attempts or Hours (whichever comes first) that you specify in each product's settings.
We only require payment of a flat, monthly fee depending on how many different products you need to sell and how much download storage space you need:
http://www.e-junkie.com/ej/pricing.htm
If you have more than 500 MB of files to sell, your most economical option would be our $18/mo plan, which is the cheapest plan that allows you to use unlimited storage on an external server (such as your Web site server or a file-hosting service like Amazon S3); the download links we issue to buyers would cloak your remote file URLs and enforce your link expiration settings. However, remotely-hosted files cannot reliably use our PDF Stamping feature to deter file sharing of PDFs, so you could only use this feature with files you actually upload to us:
http://www.e-junkie.com/ej/selling-ebooks.htm
Our system is designed to be really quite straightforward to configure and set up, and you have a fully-functional 7-day free trial period which begins as soon as you register for an E-junkie login. Our Getting Started help page is a good place to begin setting up your E-junkie service:
http://www.e-junkie.com/ej/help.sell.htm