What a pain in the ass; sure the monetary damage is minimal, but the hassle and stress of the ordeal can really take a toll.

I learned long ago (via experience) that pinball seems to attract more than its fair share of scumbags for some reason, and decided that "cash on the glass" with in-person pickup was the only way I'd sell. Sure it takes longer, but the peace of mind is well worth it! In addition to minimizing the odds of being ripped off and/or dealing with Paypal/bank ridiculousness, it helps to ensure that the buyer can't reasonably accuse the seller of misrepresenting condition or concealing damage/malfunctions; it also seems to help stem the tide of "tire kickers" and other non-serious people spamming with silly questions or ridiculous requests.

There are simply too many ways that things can go off the rails with Paypal, cashier's checks (can be forged), bank transfers (can be reversed after the fact due to insufficient funds), and money orders (potential fraud).