Quoted from Pinball_Postal:
I also had a new member inquire about a machine I have for sale. They asked about shipping, then said they found a shipper. They also asked about accepting payment from PayPal for the machine which I responded no. I suppose it could be legit. It makes you wonder.
To be fair, I myself am a fairly new pinside member and I arranged for shipping and paid via paypal with a deposit and then a final payment once the pin was picked up by STI. I don't think wanting to use paypal instantly makes the interested buyer a scammer, but its hard to find a good method for transaction that protects both the buyer and seller.