I looked at the pictures provided and noticed the header tank is mounted upside down. If you do acquire this machine don't fly it in this configuration. Now moving on to the trade you mentioned. Used camera gear and used RC gear never retain value. Standard rule is 60% off retail price and if the other party won't accept this walk away. The Raptor 30 and the Airtronics unit are worth any where between $300 and $250 dollars. I recently purchased a ARF Raptor Titan less radio for $300 dollars and this helicopter was never flown just assembled.