Shopify
A friend just pointed out the relatively new online shop administration system, Shopify, to me. Looking around, it seems pretty slick and easy to use. The interface is beautiful, very flexible, and will tie into pretty much any merchant system you prefer. You do pay a little bit for the service, but prices seem reasonable. If you’re in the market for shopping cart/e-commerce system, or have thought about setting up an online stock system, you might want to check them out.