I can't comment on the deal, but let me address some of your other problems.
What sort of BUD do you have? The LNB, specifically.
Reason I ask, is because any receiver will need to control the polarity servo if it uses a polarotor.
If you have a modern voltage controlled, such as this
dual-output model, then either output could select V or H with 12 or 18 volts, completely independently.
You wisely have avoided discussing Ku, and I'll assume you have that covered on a more reasonable dish, such as 36" or 1 meter variety.
Trying to do both on a BUD more than doubles the hassle factor.
Keeping them separate allows each to be optimized, imho.