Is that the MP5 clone? If it is, that's a good price
A friend got one when they first came out, they made some changes to them since then, H&K got on them for copying their design (or something like that)
My first impression of his, it reminded me of an airsoft toy. But it's actually a nicely made firearm and is really accurate.
I think the only negative thing I could say about it was the rear sight was just a look alike of the original and didn't have any adjustment to it, you could shoot it and set the sight on all four settings and it still hit about the same spot. I don't know if they changed this or not?