I'm glad you got out OK. ebay has incompetents and crooks as much as knowledgeable and honest persons.
One person doing the selling, another grabbing things off shelves without knowledge, and doing the shipping -honest but messy when the junk unit is shipped!
I am suspicious unless I know the seller.
Do not let it drag on, and be careful and professionally direct because after some time 30-or 90 days you lose the right to complain further or to leave negative feedback.
Be careful of laser parts on ebay, it is a good place to pay a lot for mismatched parts and plain old scrap. There are reasons I stay away from YAG rods - is it doped for CW or flash? what spectrum of flash? Questions sellers don't answer very well. I stay away from some of those aluminum cased RF excited CO2 units. Tampered screws and broken seals never show up in the pictures very well, for some reason.
It is the will of Landru.