One of my buddys is going through rough times and has this guitar in great shape, except the back plate of the tremolo is gone. is it worth $150 it works great and keeps tune and is in great shape?

Fender Roadhouse Strat
EC-1000 JB/'59
Fender Mark Hoppus bass
Eleven Rack
Peavey Classic 50 power amp
Avatar 2x12
GK Neo 4x10