..when someone tells you about the 2xEL84 amp they threw in the skip two weeks ago because it was taking up too much room? Tripletone, Partridge transformers...
Throw the transformers at his face after he hands them over.
Then take the money back from him.
People who just throw away electronic equipment are idiots. That stuff needs to be recycled, it's not biodegradable. People who throw away amplifiers I reserve more disdain for.