Speaking of good deals, the Craigslist ad I found yesterday qualified as the "good." I can't show the link because she already took it down, but she was selling 89 PS2 games (all CIB) with a fat PS2, six memory cards, and two wireless Logitech controllers. She was asking $150 and I offered $100. She took it right away. When I picked them up, she said she had several other calls, but no one could pick up the same day as I could. The seller was extremely nice and very appreciative of my purchase.
When I got home, to my surprise, the PS2 had the HDD add-on installed.

I broke it down a similar way. I figure the PS2 with HDD, memory cards, and controllers is worth at least $40 which means I averaged $0.67 per game. Not bad considering there were only a few sports games and only 9 games that I already had.
Hell, I only owned 61 PS2 games before making this purchase.

I have pictures and a full list of the games in the September Pickups thread.