Everything on the PDR exchange is confidential. That includes volume. The only thing you can see is the recent trading prices.
And BTW - I did some experimenting on the PDR trading site. You can sell PDRs for any price you want. HOWEVER - if you try to place a bid that is too low, it won't let you enter the bid. You can't lowball a PDR - the design of the site looks like they will continually climb in price, by design. Each one must be sold at an equal or greater price than the last. There's probably more to it than it appears, but as a holder of 475 PDRs, I saw it as good news that people literally can't even bid low for mine, so panic selling is not an option. They either sell for a good price, or don't sell. THAT'S wealth management :)
