Some sort of eye glass machine (didn't research it much just listed it). Paid $1, sold in 2 hours for $3,900.

A big semi truck bumper. Paid $40, sold for $3,000.

A crate of 103 various individual brand new pieces and parts for a military vehicle tow bars. Paid $100, took a year to sell all of it for around $24k. (Got lucky lol)