I'm confused, his last listing was a 7 day auction, that only got one bid?
How can he think it "went too fast"?
The only bid it got was 4 seconds before the auction ended, so clearly it isn't worth any more than that!
Because "too fast" is a matter of opinion. His/her experience/opinion may be that items that take 3 months to sell are sold at a price that "they are worth" - because by then the market has had the opportunity to value the items at it's maximum (read: sold at the highest possible price for the seller), even if, in most other peoples opinion, they are asking "too much".