PWCC vault...explain

[GregMitch34]

As I've noted earlier, I am back after putting a hold on collecting for 4 or 5 years. I've been bidding at various major auctions, scanning ebay and etc. notiicing new trends and practices (e.g. I was first to post here about the new ebay "requiriing authentication" policy). I know PWCC has been a source of criticism and controversy here for many years, but let me ask this: One of several changes there since I exited is their "vault." Just tell me if I have this right:

a) if you win a card you pay the usual 20% premium but you leave it with them and avoid tax and shipping

b) you can then require them to sell it at an upcoming auction

c) you don't pay an additional fee when it's sold but PWCC collects another 20% from buyer.

Is this right? Any other details? Thanks.