I have three Posiedon regs for sale. Two are DIN with Odin seconds, one is a yoke, yes yoke, mount with a Cyclon second (cyclon has an extra metal body, you can have it at no extra charge). They are in good shape but will probably need rebuilds on the firsts. Haven't used them in over a year and am tired of them sitting around. Each First & Second stage, $250.00 USD. You pay shipping. First person who asks gets the Posiedon style long hose that goes with it for no extra money (only one of these available). I can take cash, check, money order, or credit cards (no amex).