As demonstrated in another post on Wetpixel:
Proofs in the pudding, or so they say...
Three frames from a burst of 6 taken in less than 2 seconds as I drifted towards the pipefish and giant holothurian, so the subject distance is varying shot by shot. D200, Sea & Sea housing with nikonos bulkhead, two Ike DS51's, f20, 1/200 sec ISO 100, 105mm lens.
Retail is ~$USD350. Asking $180 plus cost of sending it in the mail, or via your choice of secondary carrier. Never flooded, pristine condition.