There is always someone, somewhere who will think this is a good deal and will pay the price. It takes longer to sell things that way but there is always someone. Once I made a mistake in advertising the sale price for a sound processor - the amount was $25 less than one could get a new one for. This was a two year old unit and believe it or not it sold for the asking price.
It looks like he knows what he is doing with 740 and 99.7 positive feedback. Heck, he even ships to the US