Not bad for a dedicated but extremely limited.
I have one of these boxes. I picked it up at Goodwill with remote for $10.00. It
will work for FTA however it is not a blind scan box. You have to manually enter every transponder, symbol rate, etc... It also has no way to switch dishes (lnbs)
and obviously no way to move dish motors.
My setup is a Pansat 3500SD box in my living room which runs my Ku Dish and motor. The ADTH box is in my bedroom. I have a Invacom LNB that has 2 Linear and 2 Circular outputs. The extra linear goes to the ADTH. Whatever satellite the primary is pointed to is what the ADTH will be able to get. I have manually programmed in 97, 101, 103, and 123... every transponder. I don't know how many channels it will take but it is good enough for me. It also will do the radio stations.
I would pay no more that 20 - 30.00 for one of these. Just as a cheap way to get into FTA also it can handle getting FTA Circular. Wih only a few Circular FTA stations it would be not worth setting up for 1 or 2 channels per bird!