I thought that Quentin only asked for rarity 160 and 175 items that were going for 50,000 sP or less in user shops?
If that is true, Quentin is busted because I was just asked for a Bubbly Green Dress which is going for 229,000 sP in user shops.
I think it's probably because of the quest a thon, items that were 50k or less when the cron or whatever checked prices to see what items should be in the quest pool for the day have been bought out and prices are inflated. it doesn't check the current price of the items for each quest.