Most likely you are seeing a known bug on the Amazon Prime Video platform. This bug incorrectly mixes the subscription version of an MHz Choice program with the pay-per-view version. See screenshot below.
Please be assured, all of the programs you see on our website at mhzchoice.com are also included in an MHz Choice on Amazon subscription. You do NOT have to pay extra for them.
What can you do?
Select alternate seasons until you see a version that says "included with your MHz Choice subscription".
We also recommend reaching out to the good folks at Amazon customer support as Amazon handles all tech and billing of their site and apps.