Your web image

• Your customers want to order from Amazon.com. Amazon.com is the world's largest online retailer and the de facto standard in how products are purchased online. With nine-hundred-gazillion dollars in sales, they must be doing something right. Mimic that.
• Credibility is critical. If your website address starts with any free webhosting service, don't expect me to buy from you. I see that and I think 1) you're either too cheap to get real hosting, which then makes me wonder what else you're skimping on; 2) you're a brand new business, which makes me wonder how much experience you actually have doing what you're selling; 3) you're an idiot.
• The other problem with "free" hosting. It isn't "free", it's supported by advertising. Someone else's advertising. You want to sell your product, NOT theirs. It makes your site look bad, too.
• You can't sell from email. If your website is a collection of products for sale, but clicking on a link opens an email for me to make a "request", I'm gone. You must have a shopping cart!
  
  BUT don't run down to the local software store and buy one. A simple Google search for "free shopping cart" (with the quotes) returns hundreds of options: you probably won't need to search past the first page of returns. Hell, your web hosting provider probably offers one for free; most of them do.
• "Buy Now" links from Paypal and similar services (like EBay) don't count. Seriously: if I want to buy five things from you and have to make five separate transactions, forget it.
• What about eBay? eBay used to be a useful site, now it's wholly overrun with retailers, and you'll have so much competition for your keywords that it's unlikely you'll get any useful traffic.