What are my boots worth?

I have some SPK's I've been on since about halfway through last season. They are free of any damage except the typical scuffing, dirt, etc. They were sent back to Salomon because a spoiler came off, good as new now, I see no reason for a considerable deduction there. I only paid 320-350$ for them. Basically they have been used, not ripped on, no more than 30 times.

So what would be the approximate value of these, as a starting point, if I were trying to sell these here. I am not selling them here, but I am trying to determine what they would possibly fetch in a normal market. Thanks a lot.