Hey Jim, from what I can remember when I was trying to build my collection, some of the NJO books that were only released in HC through the SFBC were pulling in some good money (Traitor was typically selling for around $100). Also, anything that was a 3-in-1 like the Bounty Hunter Chronicles, etc. Other than that, unless it was a first edition or rare HC (only through SFBC), I remember them being pretty average. Good luck!
It's kind of funny that you started this thread because my wife has been getting on me to get rid of my HC and TPB collections. I keep holding on, but eventually I think it's a losing battle.