You can watch the for sale or trade areas at both

Knife Forums or Blade Forums for Sebenzas. It is unlikely you will find one for $290 or less but you may have something to trade.

I keep my eye on Blade Art they have a Clearance list that sometimes has good buys. They currently have Fixed Blade Greco's for $50. I have not ordered from them yet.

I have bought from both One Stop Knife Shop and Cutlery Shoppe

I find the Cutlery Shoppe web site to be very irritating, but they have good service. They have sale flyers that can have some excellent prices. 1sks has a good web site, more comprehensive lists of knives, but have provided me with less service.