To give you an idea on price. I bought my girlfriend, brand new, last years 10.20 170's for $350.00. On ebay, last years, new still in wrapper 10.20s in 170 and 190 are going between 325 and 350, and 180s between 350- 400. That was mid season, now maybe less.
For used ones in good shape ( how many days ? ) let's say 30 or so ??? in 190cm, I'd say $250.00 for ski. If the bindings where atomics, and not ESS ( I know, atomic owned ESS, still it's a mental thing ) and they were last years also, I'd say add $100 for bindings. Since they are not last years atomic bindings, I'd say add $30.00. So some where between $275 - $300 for ski with binding. If this sounds low to you, also consider this - At the local on mountain ski shop, at the begining of the season, there was a pair of last years 10.20s with atomic 614 race bindings on, in good shape but used, going for $299.00. I almost bought them just because the bindings were worth almost that and the ski had to at least have 2/3s a life left on it. But I thought I'd get my girlfriend new skis instead
hope this helps