shipping costs to work with either PayPal or Google Checkout

Hi, PanM here. Trying to build a website to help my cousin sell his
beautiful art. I am using a free web page at weebly.com and they have an option to use either PayPal or Google Checkout to put in shipping costs and go to the cart checkout. However, haven't evaluated Google yet, but PayPal does not do what I want. You have to put in various shipping prices and then it doesn't relate to the state or country unless you select all states, or anyway that's how I see it. I have found one on the net that wants $5 per month, but I am trying to do this for free. UPS, FedEx, and USPS have API's that can probably work, but I would prefer a HTML file or Javascript file in the page on my site. Can anyone help with this problem? Please.

Thanks,

PanM

Have you considered only shipping via USPS Priority Mail? Because then you can use the same rate for anyplace in the USA. Would simplify life a ton.

Thanks for input. Yes, I have considered only USPS, but I would have to understand API's and work with their API. I have signed up for it to learn more, but was hoping to find an easy :) solution such as javascript or html in page to do these shipping calculations before going to PayPal or Checkout.

Thanks again.

PanM

Well, unless you are talking about hundreds of works of art, if you use USPS Priority mail, you just go out and manually get the shipping charge one time and, as I said, it is the the same for any place in the USA. So with only a dozen or two or even a few dozen works, you would just do it manually to get started. Store the shipping cost right along with the cost of the piece as a fixed price per piece.