I have a client who may be looking for the impossible in a shopping cart. She wants something that is responsive, mobile-friendly, offers flexible pricing for different option combinations, allowing up to 3+ options for each product, separate product thumbnail on results page from the image that is on the detail page, use of categories and sub-categories, flexible and changeable detail page layout options. Oh, and she wants one that can plug into an already existing and designed web site, so we don't have to use an online store template, like Zen Cart. Big wish list. Any thoughts? Cartweaver.com offers almost all of these things, but it doesn't allow for a different thumbnail image and a different detail image. It takes one image and resizes all of them accordingly, so only one image is uploaded. She also doesn't like the thumbnail images below the detail images if more than one image is used. Cartweaver is about the only shopping cart I've found that can plug into an already existing web site. Thank you.