I just picked up a TI-99/4a and a box of games for $10 last weekend. Today I was looking through them and found that I have at least 3 R8s (Zero Zap, Connect Four, and Yahtzee), several R5s, and a bunch of R1s.

Is anyone out there actively searching for the rare TI-99 games? I did a quick search of ebay and found that they go pretty cheap, despite having a DP value of $75 a piece for the R8s. I realize the TI-99/4a is no NES in terms of popularity, but I'm just trying to get a feel for what the collectibilty of this system is.