E-junkie is not a payment processor, so we do not handle any actual payment funds at any point. Buyers would pay directly into your chosen payment processor account, such as PayPal, which would handle the checkout phase of orders placed through your E-junkie cart. In order to use our shopping cart and other features, you would need to have an account with at least one or more of the independent payment services we support:
http://www.e-junkie.com/ej/help.payment.processors.htm
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. Our standard cart would appear as an overlay "inside" your own page, fitting within your site's existing layout and branding, or you can use Buy Now buttons that bypass the cart to take buyers directly to instant checkout for just one item at a time.
Information such as the buyer's name, email address and (optional) shipping address would be collected in due course during checkout, so there is no need to collect those details with the purchase buttons on your site; if you need buyers to select or enter additional product details, you can do that with our Variations/Variants feature:
http://www.e-junkie.com/ej/help.variants.htm