Sigh..."gouging". In a free market there is no such thing. You're welcome to sell your guns for as much as someone else is willing to pay. If you come across a buyer to whom you'd like to offer a discount for whatever reason, then that's your right as well. I've sold some goods for well over what I originally paid for them and I've had to take a hit on others, depending on the market conditions. And I've met buyers who tugged at my heart to whom I've offered discounts.
If you have guns with which you'd like to part, I'd say now is a great time to sell them.