Yeah- I am no expert on electric knives, but if the $11 one works as well as the $50 one than woo hoo!
Mine has lasted all through the ice fishing season (wailed on panfish) and all open water season so far with zero problems and complaints. Most of my fishing buddies have the same model and like it too.
Chalk one up for the cheap model, I guess! I, for one, sure can't drop a bunch of dough on a fillet knife.
But one this cheap pretty much pays for itself the first time you eat some fried fish, you know?