I've seen H&K SBE's on used-gun racks priced in the $600-$900 range. Price is usually a factor of condition. Most are priced in the $700-$850 range in good condition. Most of the H&K SBE's had a misdesigned and incorrectly heat treated ejector "plate" and most of them broke in use. Heckler & Koch and later Benelli USA would usually send you a replacement for free. Not a big deal to replace, but check all used H&K guns to see if it's been broken. Unless you're sure that the plate has been replaced, probably a good idea to go ahead and replace it if you buy a used H&K. I own a few H&K SBE's and have had to replace the plate on all of them. Otherwise they've been flawless.