The $200 keg does not include any ball or pin lock fittings and has some strange pressure relief valve on the lid. Best case, you need to purchase in & out ball lock fittings, maybe need gas and dip tubes, o-rings, and possibly even a new lid. Add at least $30. Thanks for looking.
I have just posted a 10 gallon keg forsale in the Seattle, WA area. Used, in good serviceable condition, $175.
https://www.homebrewtalk.com/f16/10-gallon-ball-lock-keg-seattle-area-171792/
Yes, thats right, a genuine 10 gallon ball lock keg forsale in the Seattle, WA area. All fittings in great shape, no major dents or dings, a few scratches though. $175