you paid 189?

I think you got the CMP 120 size P-51...

Raidentech sells 2 smaller mustangs, 1 is a 60 size and the other is a 40 size. They both fly pretty good, and aren't bad for the price.
However, I gernally will pay more for a better built model and by a more known manufacturer such as hangar 9 or great planes.