anyone use half.com for books?

Any issues with this service?  15% sounds reasonable...

I used it years and years ago when I was still in college (so 15 or so years back).  Would both sale and buy text books from the site.  Was thinking about jumping on it again as I have a few hardback and a ton of paperback books out of a unit.  Paperbacks may not be worth it but the hardbacks may.

I have used several times. Seems to work OK.At times I have listed on Ebay and Half.com.When it sells I take it off the other.