I have had an E-Bay listing terminated by E-Bay because I stated in the ad that I would accept cash. It was actually in a little bit of tongue in cheek about "I don't accept trades, swaps, indian blankets, Rolex watches, jams, jellies or knot headed kids, only negotiable funds, cash, personal checks or money orders in addition to the required PayPal."
They didn't comment on the checks or money orders statement, just that accepting cash for a sale was against E-Bay policies and the auction was terminated.
I also once had an auction terminated because I indicated that I would accept PayPal only if the buyer paid the fees, i.e. 30 cents per transaction plus 3% of the total. (I once sold some brass (years ago) and wound up paying 30 or 40 cents out of my own pocket for the privilege of selling the stuff. E-Bay said I couldn't charge customers for using PayPal since it "made it too difficult for the winner to figure out the actual cost ??!!" Like their bidders are too stupid to calculate a 3% charge ??!!!
Their rules, their ball game and like others, I have an account set aside with virtually no money in it specifically to transfer to and from with PayPal.
Dan R