$500 as is or i'll take it to a hobby shop and have them give it a once over and dial it in for you at your expense shouldn't be more than $40-$80 tops.
I don't know not a huge RC toy guy Comes Ready to run with remote, handles parker chop with ease and is very fast, has a pissed off weed whacker motor in it that's water cooled, dual outboard rudders, brass prop. Hasn't been run in 2 years put new batteries and gas in it and it took a bunch of pulls to get it started then was WOT so I think there's something up with the trim setting on the remote or maybe the carb needs to be cleaned. These cost $1200 only been used a few times piston has no deposits on it even and it's a 2 stroke.