Over the years I have received all kinds trade offers in response to my Craigslist ads. Including guns, puppies, commercial freezer, iPad, laptop, stereo system, slot machine. Always stuff worth less than the pinball machine I had for sale or trade.
My Craigslist ads always said will trade for other pinball machines, but that does not seem to stop them from offering stuff.
The worst was when a guy wanted an even trade of his Triple Diamond slot machine for my really nice TOTAN. I usually ignore the weird offers, but his was so insane, that I replied back to ask him what kind of drugs he was on.