You can convert your website into an online ecommerce store. You need to have merchant account if you plan to accept online payments like pay pal. Furthermore you should have paid domain name. your website should open into secure connection "https". Rest depends upon your business type.
yes, you can! you can change or modify your website and become an e-commerce site.. so what is your website by the way? Is is a static or a do you use any carting software?
Some web programming companies charge a lot of money. I know of a site that offers free hosting fees and charge great prices at www.warpdev.com. They do ecommerce accounts as well. I know they are extremely helpful and completely affordable
Never go near free hosting, some will have ads on your site others will just have crap load speeds and up time. You can pick hosting up for soo cheap these days, is it worth risking your reputation on continuous downtime? I know a chap called Pete, he can host your site with a fee as low as a "Happy Meal" his words not mine. If you would like me to put you in contact with him drop me a message. He also offers a hold your hand service and will steer you in the right direction. Daniel