Can I send a shopping cart total to JotForm so my cart is not built into the form?

I have a large number of items (100,000+) that are currently served as single pages with an Add To Cart button. I'm looking to migrate away from the cart provider to a more secure environment without losing functionality. We use Authorize.Net for the approval now. 

I see how to have multiple line items for a cart, but it is only practical for a small number of items. Am I not seeing a more traditional "add to cart" template or is it not possible with your current design? 

The attached URL gives an example of engine parts. The user could need one or 10 of the parts, but we never know which ones so each are stand alone pages. 

Also attached is a screen shot of a stand alone page.

Thanks for your thoughts!

Jim

Unfortunately this is not possible as of yet. You might like to check these workarounds instead.

http://www.jotform.com/help/275-How-to-pass-a-calculation-to-a-payment-field