According to forum rules, yep. Not supposed to derail classified threads to bash the OP on their price.
We're in an open market, aka, supply and demand dictates price. If someone will pay it, who are we to derail their threads?
On a side note, one of the slims was an all brass which are very tough to find (looking for one myself, just not for $350-400).
Some people are just greedy. I sold two Slims, one Nickel and another Brass, for $70 each.