Sounds like an interesting idea to me, especially for someone who had a out-of-work, but sound and broke pasture puff they needed to sell. Sometimes you do have to sell NOW. I can't see the whole site, but nothing here screams "Kill Buyer." And if they put 30 ro 60 days into a horse and resell it for more, so what?
It looks the owner has a background in auctions and sales. How many people bought a nice horse, for a reasonable price at PAS sales?
I had a friend who wanted to unload a horse of hers that was a 'troubled' horse and she had contacted them about trading him in (basically) for something else that they had. The deal never went through (she gave him away to someone) but they seemed nice and educated.
They do have some nice horses there. But are most certainly not kill buyers. Now where they'll rehome the unsavory types to is beyond me.