LEGAL ADVISE

^not a lawyer either, but I've been sued successfully and it was a harsh lesson about written and oral agreements, and how con artists work the courts. And something a guy never wants to allow to be repeated.
No written terms and no witnesses is where our friendly lawyers are necessary. And in this case, the burden is squarely on the buyer, since he paid and accepted. Anyway, my opinion ended up being the dollar amount must be substantial to ever go anywhere near the courts. We couldn't come to terms during arbitration, and now I know I should have seized that opportunity. I chalk it up as a $4k life lesson.

Guessing, but they must be pretty unhappy to even think of suing. Or bluffing scammers.