For sale:
Olympus m4/3 9-18 lens: $400
Zoom gear: $25
Used Zen WA 100 dome for Olympus PEN housings: $250
Above three items together: $625
If you shoot micro four-thirds, then you're probably aware of this set up. The Zen dome also works great the with 14-42 kit lens and the 60mm macro, giving you a nice one port solution. I also have the Zen adapter to use the dome port with the Olympus OMD housings for E-M5 and E-M1 available for another $100.
Olympus 12-50 lens: $150 note- this lens does not work with the dome.
Olympus flat port for OMD housings: $300
May consider trades for steel tanks or something along the lines of a Dusty Light for buyers in Oregon (I'm in Eugene but could travel up I5). Otherwise, USPS flat rate shipping included in the price.