Sorry for the inaccurate price on the pole.
The siren and controls, however (130-DC), were $11,400 according to Federal Warning Systems back in November. Prices are only good for 30 days, and are therefore not recent, but are probably a fair estimate. Blue Valley might charge a lot more, also, FWS does not service TN.
Battery warming blankets are extra (about 500 for four)
Transformer for AC/DC operation is $1,500