I found several web sites using self-calculating online
forms instead of a shopping cart.
A couple of references: http://www.elbowspace.com/FRHformexample8.htm
http://www.fospace.com/FOSsellstuff.htm
Basically, they are web forms that calculate totals,
tax & shipping with each click of the mouse.
Compared to a shopping cart that bounces
back and forth to the server every time
a product is selected, the web form page
is sent only once. All product selections
are made on the same web page and submitted
only when the shopping is complete.
Hope this helps.
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