Can confirm this. I was given this information the first time I signed up and have been getting the difference every year when I go to renew

Never seen it written down. They just told me once at customer service when I went to cash my rebate check and they noticed it was smaller than the membership price difference.

They’re more than happy to tell me about this, so I’m sure if you ask they will be happy to share with you. They’ll even refund the whole membership