X2 on sit it again. I just bought a new Radar Senate with double Vector bindings for $200 less than I could find it anywhere else.
If your son is still growing *which I would expect based on age) you can find great deals on lightly used gear that will only be a year or two old and at a fraction of the price. I wanted to move my 5 YO Connelly Concept with double Sidewinder bindings and let it go for $150 plus shipping. Not a thing wrong with it just didn't want another ski sitting in the garage.
Women's gear is the same. Amazing the number of women that will say they want to get into the sport then never use the gear they've purchased. It's usually all color coordinated, used only a couple times and in near new condition. Usually at fire sale prices too.