AUS to USA transaction:

Have recently sold an item (Playstation2 game) that is region-locked to PAL and this was very clearly detailed in the title and description for the item.

The buyer is now claiming faulty product, as it does not function on their assumed alternate-region console.

I personally tested the product (disc/gameplay) prior to shipping the item, knowing it was in working condition.

I have sold multiple items of similar status without any issues or negative feedback prior to this.

With funds on hold and no immediate support from eBay as a seller, how would one handle this dilemma?