I can't really tell you any exact numbers since I never really calculated it... but! To give you a small idea: on a 190-200 RP I spend ~65k on supplies per trip. One trip gets me 10-12k in gold, ~3k in creature products and... the rest is pretty random. When I'm extremely unlucky I come back with just a pair of zaoan shoes, mostly though it's somewhere between 22-70k+ in items (zaoan sets+tower shields). I do around 6-7 trips per day.
Overall I think this place can be great money-wise for an RP.
In fact, In my opinion (not counting Ghastly Dragons for higher levels) it's the best one!
edit: Currently got 106k in items and not even done with this trip.
edit2: Make that 118.5k
edit3: 132.5k O_O