You might get a discount if you buy in USD -- Because it's often considered "bulk" buying when someone purchases an expensive item.. Therefore they usually get a slight discount from the going rate of $3 per million. And if you're into reselling items or if you really like HTS items, you can probably get a discount here. Since many people AB in the Attic and just try to get rid of their items. But other than that, I don't know if you'll find people selling ETS things like lab maps or (some) BD items at a discount. But then again, maybe.. You never know.