Add simple paypal payment gateway to my site.

I am looking to have eCommerce added to website www.autowrap.co. So if I use paypal and add this for the listed pages for the products in the project description. I dont anticipate users buying more than one item at a time so we could try paypal and revisit it later down the road if i sell enough items. I would be looking to have eCommerce added for the products on the following pages. [login to view URL] [login to view URL] Also need the checkout page customized with my logo so that it looks nicer than a bunch of red x's showing on the checkout page. I will send my logo to selected coder. Thanks