I was wondering if there is a way to mark/acknowledge receiving PBS Market buys like you can with regular swapping?  Does anyone know?

None that I know of.

I don't recall marking it received

but  if I remember right-the  purchase ended up in my books on hold bookshelf

so it was easy to post it from there to the system to trade.

Jennifer,

There is no need (or way) to mark Market books as received. We send them out with Delivery Confirmation, so the P.O. lets us know electronically that the book was received. In the rare instance that a book shows up on your bookshelf (on hold) that you didn't actually receive yet, you could send in feedback about it after waiting a day or so. My experience has shown that occasionally (but pretty rarely) the P.O. notifies us of delivery a day or two before the book actually gets there.

Hope this answers your question!

Len