What are you talking about? The funds that were transferred to them were used for whatever purpose they were designated. If they chose to keep some funds on the chain and instead cash out fiat then there is no difference. The deliverables were paid for. Let's try it this way: if I give you 5 HBD to buy a $5 beer and you take it and then use the cash in your wallet to buy that $5 beer than the beer has been bought for $5.