Acceptable is what you are willing to pay
I have always paid from $20 - $40. The factory refurbished and warranted Edge I paid $49.95 with free shipping. I bought two.
My signature series I paid $20 and $15 shipping. I replaced the belt and brushroll, and it was like new.
Another thing i like about Orecks is they are extremely easy to work on. Usually all you need is a Phillips head screwdriver.