Are there any studies that show the best location on a page to place the "BUY NOW" button on a page to optimize sales? I have a full page explaining the product with photos and the shopper will have two "BUY NOW" buttons to select from. One for email delivery and one for snail mail delivery of product. Any suggestions?
Try this screencast Product Detail Page Design. In there they discuss placement of the Add to Cart (Buy Now) buttons for optimal success, and other goodies.