Picked up a copy of Heroes 4 today at a second hand book store for 10 bucks. I went on Ebay when I got home to see if I could find a expansion pack for it, I was pleasantly surprised to see that HOMM 4 is going for about 100 bucks on average. When did this game become collectible?

Also on a side note. Does anyone know if there will be another HOMM game? I couldn't find out any info on the web, I haven't had any time to really dig though. I wonder if 3do still holds the franchise license, I'm hoping they sold it or something.