About 4 years ago I started collecting old CPUs...mostly 386 and 486. At the time, I was buying them on ebay in lots for ~ 50 cents each. I recently dug out my collection, and wanted to add to it, but now I see that old CPUs are going for ~$2 each in lots. Why the hell are they so expensive now? Are they just becoming more collectible? I notice lots of auctions for old CPUs say "gold scrap". Is there really more than $2 worth of gold in a CPU?