I could see where that would work but I need to keep it very simple for my friends. It took me 5 years to convince them to get an online store. It's an older couple and I don't want to confuse them with a lot of extra figures they have to make. Like if they get ready to add another product. Wouldn't they have to create a shipping weight for it if it wasn't already set up?

What I was thinking that there was a plugin that added a feature in the add products page where you could add the shipping cost right there. Must have been another program but I could have sworn it was Zen cart. Just a simple flat rate for each product individually as your entering the product into the store.
When they sell a product they know how much they are going to charge to ship without any USPS feeds or anything. Product A is $xx for US shipping, Product B is $xx for US shipping.

Shipping to Other countries is a Call for Quote usually. They mostly ship inside the US.

If I can't find a way to do this or purchase a plugin that will do this I may have to use another type cart. I love Zen cart because if I ever have a problem I can usually find assistance or a plugin to help with what I need.