Whats the most you spent on junk?

I paid $2500 for a 74 Charger SE 318 sunroof car.

The seller failed to disclose that the frame rail above the K frame bolt was rusted out.
(and I'm sure he knew it)

I did use the bucket seats in my Satellite and have parted out just about $2000, so I am even, and still have parts left over, so I will eventually make money.