How much is used welding equipment worth?

[lint]

I have some welding gear laying around that hasn't been used in a while, but I have no idea what the used market is like for welding stuff. Minimal use, only about 5 months on the weekends back in the summer of 2011, the same year I bought it and then I put it away.

millermatic 211, gas (conservatively 80% full), cart, helmet, table, metal chop saw (carbide tipped) and other misc

75% of retail?

[spacerz]

Looks like this guy is willing to pay $800 for one...link (http://calgary.kijiji.ca/c-buy-and-sell-tools-power-tools-Wanted-Miller-Welder-Millermatic-211-W0QQAdIdZ441198403)