I've noticed that some dealers at local gun shows have been offering some great deals on Benchmade and Kershaw knives. I'm more into slipjoints and bushcraft style knives these days, so I didn't oblige. Looked like they were moving on to the Mtech and other junk brands instead of the high end stuff.
I see a lot of disgusted faces when they find out the price of a knife at a gun show. Someone walking down the aisle with a $1500 sport rifle, will balk at buying anything either than a super knife or gas station knife.
Of course there are dealers that won't budge, some dealers think they have gold, you could have the exact same knife in the exact same condition and they'd call it a dog turd. I can think of a few dealers that actually carry high end knives and will make a deal, but I have bought from them in the past.
I used to travel the gun shows, trading a ton of knives. Trading knives for guns is crazy. One year, I sold knives to a couple dealers at a show in December, they were buying their Christmas presents from me after selling a ton of ammo, guns, gun parts etc. I bought myself a rifle for Christmas. Right now, ammo and surplus firearms seem to be the big sellers. If I had any available $, I'd be looking for good deals myself.