[Rem]

The question is though, are there enough people buying for higher prices to worry that it's really going to influence prices across the board? I admit I don't go to the Exchange much, but it seems to me that it's a very small percentage of users that have enough disposable income to pay whatever they want for an item.

It's like--
Say there's five people selling 20 runes. Buyer wants runes RIGHT NOW and goes to Seller 5 and offers 5k for all 20. Seller 5 agrees. Now on other sites, you would see perhaps Seller 1-4 immediately upping their rune prices. But Trisphee is small and there aren't all -that- many people using the exchange anyway. I think if Seller 1-4 then went 'Okay it's 5k for my 20 runes' they would not get any sales. Then after a bit, they'd have to drop prices back down to reasonable.

(Runes might be a bad example because they're rare, but I think it'd work the same with an item. Five sellers are selling the same item, random Buyer buys from one for very high price, I think the other four - considering this site's size and userbase - would be pretty stupid to be like Oh okay that ONE guy paid 20k for this, so everybody has to now)

They wouldn't sell anything.
This might be a concern once the site gets more active, definitely. But right now I don't think it's something to really worry about?