I've seen these listed numerous times over the past month or so (always noticed them as I tried to get a cousin to pick them up for his dad who is a J.W.) but it was only for 100 chips at a time. They always went unsold then would pop back up at a lower price the next day. I was going to pick up a rack but was waiting for the price to drop a few more times
This new seller must have made a side deal with the original seller for the lot of his chips (current seller won the last auction of 100 chips for $30)