The post office website to calculate postage is not displaying prices for first class mail packages, at least for packages heavier than 8 ounces. It is only displaying media mail and the more expensive options (priority and express mail).

I expect this is a computer glitch, and not an adjustment in available services.

I have tried this several times today with various weights and destinations. I have also had no trouble getting Ebay and Paypal to print the appropriately-priced labels.