Ahhh - thanks. Interesting - I would think ebay's AI would be smart enough after all these years to be able to determine scam listings like this. Wouldn't be too hard. Something like "BIN price is 90% less than market clearing price for a very hot item selling XYZ units per month" - then flag it for review.
There are now several other ebay listings with similar 90% discounts on various hot NVIDIA cards.