I remember buying the game for about $10 about a year and a half after its release. One of the better purchases I ever made, because not a few years later the price shot up to around $30 to $40. No idea what it goes for these days, but I was glad to get it as cheap as I did as early as I did.
I'm pretty sure I got it at the same sale you did, because that's what I paid for mine.
I remember sitting down one day and playing through it. I got probably 5 or 6 chapters in and I was absolutely transfixed. Then I was trying to get some space between a monster I was fighting and myself and I ran right into another monster. I tried to find a safe spot to start attackign them both and got disoriented and wound up in a corner where they both hacked me into little peices.
I went to go restart when I relized that I was so taken with the game and storyline that I forgot to save. At all. 4 hours right down the tube. I was so pissed off at myself that I still haven't picked this game back up.