Good for you,i have nothing against this person you've had issues with reguarding this trade but it sounds like you got the raw end of it, It just does'nt add up for him and as some of the people posting in this topic have ,i have also heard my fair share about his bad trades and deals as well.
I don't actully think he believes that some one will do something about a bad trade ,So i commend you on doing the right thing (small claims court) oppoesed to the wrong thing (breaking his legs
).
Cheers and all the best,Remember if you don't win your claim you still made a very very very good point and example for the forum