ecommerce and shopping carts

I got contacted by an attorney looking for prior art on ecommerce and shopping carts, especially web-based stuff; a bunch of lawyers ended up with the OpenMarket patents and is trying to shake everyone down, ala SCO. Amazon, among others, are working on busting the patent. The two early events I know of are: June-July of '94 my company (Bibliobytes/HKS.net) released "OrderBook", which was basically a front end that would let you enter some SKU's and credit card info and would email us an encrypted copy of the order to be processed and fufilled. You got the SKUs from a catalog downloaded seperately from a web page, by ftp, or whatever. Around August 2004, NetMarket, a startup done by four guys from Swarthmore, started selling CDs over the web. Anyone know of any other shopping-cart and/or automatic payment systems that were up and running or publically described before October of '94? --akb