7 1/4 suregrip

I just bought a sure grip 8.25 for $200 complete with drums and everything.
so I cant see it being worth much more than $200 bucks. I see open 8.75 rear ends quite often for 200 - 300 bucks but they are always 600 miles away. thats why I bought the 8.25 sg and I still had to drive 100 miles each way to get it. I live in the middle of the moutians , nearest big city is 8 hours away.