Not a bad price for a healthy fish. I've seen fires appox 12" go for 100$ around here.. and bought mine at 6-8" for 40$ each. And I wouldn't sell my 20"+'s for anything less then some outrageous figure... worth every penny I've put into them.
I bought a 22" for $70 2 years ago on CL and another 23" 1 year ago for $78 at a LFS. They are both healthy and eating good. One eats worms and prawns. The other one eats worms and live crayfish. They are housed in different tanks.