The problem I see with this one is that there is no actual "Forex Marketplace". It's a term to describe the practice of currency trading which is as decentralized as any market could ever possibly be.
The word "FOREX" is actually a registered trademark, however it doesn't seem to be actively enforced possibly because of the wider meaning ascribed to it. Most firms don't have a "Forex Desk" they have a "Currency Trading Dept."
That being said I've seen comparable sales in the mid $xxx range and the trademark doesn't seem to discourage anyone.