Whats the most you spent on junk?

My 70 Dart was purchased in 1991 complete, but not running, for $70.00. I estimate that over the 20 years of ownership and restoration I probably had about $15000.00 CAD invested in it. I enjoyed the hell out of it for at least 10 years, and sold it for $13,500.00 CAD. Easily got many times my money's worth in fun and good times with it. Now I'm working on a 75 Dart Sport that I bought for $800.00, probably have spent another $4k so far, but am largely enjoying resurrecting it, and am getting close to having a running and hopefully driveable ratty muscle car.