If you want a good all around barrel go with the J&J or CP.
If you want a great woodsball barrel that will get you those long shots get the flatline.
If you wnt a barrel that will be a lil bit of the mix of the two and you are willing to learn how to use it get the apex.
The flatline is the...
Your looking at about $200 to $700 for that bike. Depends on the condition and how good it runs.
They just are not worth a lot one it is a 1985 and two it is only 100cc. Thats a small bike. Your best way is to look for people that have young kids and the parents ride dirt bikes and try and sell...