Anyone selling online and need to have current shipping rates all the time? My current system connects to the Thailand post websites and grabs their rates from their rates lookup form.

However as of late their website is sooo slow that it's almost impossible to get rates; most of the time it offline completely.

Does anyone know if they have any kind of webservices/XML system for looking up rates? (Like UPS, Fedex, USPS etc.. have) Or has anyone else come up with any other creative solutions to getting current rates?

Note that i want to avoid using a manually created spreadsheet full of rates as it is difficult to keep current, or know when the rates have changed etc...

Would also like to know.