Add a "taken" or "complete" tag to the Marketplace

Whenever I’ve completed a trade in the #marketplace, there is normally someone who always asks if the trade is still up. While, yes, I can just edit the message or delete it, I feel like if adding a tag called taken for the #marketplace would help a lot. The taken tag means that your trade has already been taken, it’s complete. OH! Or maybe instead of taken, it could be called complete.

It just closes on its own, no need. And in the case that it does complete before that, OP will likely come back to edit