How much should I sell my minipocketrocket? (motorcycle)?

I have a gas pocket bike it goes about 45mph i got it for 281.88

Then I got upgrades for it that costed 88.95
So it can probably go 50-55mph
But I found out that I need an intake manifold
because it is leaking without it the part is 38.45 how much should I sell it for?

2 stroke, 4 stroke??? Oh, and the manifold should only cost like 10 bucks. Try partsforcooters .com. We need more information on the bike esp. chinese or Jap??

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