I have looked at this programm some time ago after I saw a link somewhere. If you have the Elite Membership you get a Priority Pass Membership worth 99.00 USD / 99.00 EUR. You have to pay for every entry in one of their lounges 24.00 USD / 24.00 EUR. I am not sure about the rest of benefist but I doubt it is worth the money.

Unfortunately the Lounges can also not senn on www.prioritypass.com but some US Airways Clubs, UA RCC and Delta Crown Room are participating in this programm. If lounge access is the most wanted, you might sign via www.freddieawards.com, which is sponsored by Priority Pass and they have a special offer at by clicking on the link on the first page of Freddies with rates (first year !) starting of 79 USD for pay per entrance and 199.00 USD for a pass with ten entrances.

I cannot give any comment about the Lounge Pass in the classic Programm. An E-Mail about the Lounge List was not answered by Prioritytraveller. But I think it is the same company running both programms.