I am entirely unsure where to post this topic so I expect the full wrath of the mods of this post is inappropriate or in the wrong place.

I was thinking of getting an air-rifle (there is a nice one in the sales section I have my eye on) but I can't really afford it. I have however been considering selling one of my two pistols, specifically my Umarex Beretta. I was just wondering what sort of price would be reasonable to put it up for in the sales section?

The gun was £180 new and I got it about 13 months ago. Its only ever been shot indoors and has had about 2000 pellets max through it.