I will use my Veltro as an example.

Airframe: 160.00
Motor:  150.00-250.00 for a good used .91 size four stroke.  Shop/ask around.  You will be suprised with what you can find.
Servos:  15.00-20.00 a piece.  Mine only takes 4 since I have torque rods for the ailerons, one less servo. I use Hi-tec 425BB
Retract servo (if using retracts) 35.00
Battery pack. 20.00-25.00 Go with a 1500mah pack if you can.
And all the Misc crap I would add another 50.00.


I would guess a good ballpark number around 550.00 bucks give or take.  Unless you need a receiver, then account for another 60-70 bucks.

Some may say you could get away with less but that has never been the case for me.