Everything is negotiable--if you feel you have something to gain (i.e. a sale for a maker, a reduced price for a buyer, etc.) by negotiating.
If you feel that your knives are priced right for their place in the market, then it's up to you to decide if you'd rather go home with your knives or cash, depending on how well things go at a show.
If you feel that your knives are priced right for their place in the market, then it's up to you to decide if you'd rather go home with your knives or cash, depending on how well things go at a show.