I was in the same boat, running an elk through a Kitchenaid makes for a long day.
I was just helping my brother find one and I didn't see anything under $350-400 that I would buy unless you can score a deal on a used one.
Or, roll the dice with an off brand, but they seem to be not that much cheaper. Check the weight, that usually shows the ones dramatically misrepresenting the hp. I would go min. of legit 1/2 hp, probably would go 3/4 if I had it to do again.