He is very optimistic, but it will not move like 3x, but may be 100-200 usd rise we can expect.
I'd be very surprised if the highest priced one sold above $800. I don't think the market will move to the sale price either because of the sale.
Businesses and professional auction-goers will probably bid below market. But we cannot rule out much higher bids by rich individual investors. People sometimes waste a lot more money in unexplainable whims.