The summer after I graduated from high school, I had a Gateway 486/DX2-66 circled in Computer Shopper for college. Pentium 60s were availble, but they ran too hot and didn't perform that much better for the price premium. Then, at the end of the summer, Pentium 90s came out and I took out a loan to buy one. It was a Zeos Pantera with 16MB of RAM and a 500MB hard drive. I remember telling someone When Quake comes out, I'll be able to run ten Quake servers on this thing! Not being financially savvy, I didn't realize that by the time I paid it off, five years later, it would cost me $5000, and the computer would be worthless.
Just something I was thinking about as I work on a Pentium III-500 that I got off ebay for a bit more than $100.
Update: Looks like there's a similar system on ebay right now. $15.