ANY PINBALL MACHINE PURCHASE should be "pay on pick-up" with people you have never met. Espescially ebay or trading post etc.
I dont have any problems buying from a member of the forum or from mark c, sight unseen, cause u know it is all good.
However, i wouldnt put too much behind the negative feedback he recieved. I had a ebay business once and the idiots i had to deal with was unbelievable !
Ebay is about as reliable as my x-wife !