They're a separate currency, you get gold bars and dollars.
Gold bars are the MT currency and we don't really know the exact worth right now because you can't actually buy them yet. Only earn ingame, so no pricing info currently.
Can anyone confirm prices for pelts/fish?
I think the salmon were a nice $4.50 or so each right? And Perfect Pig Carcass was like $5.
If they've changed, what seems to be the best thing to go after then?