i understand how ya feel bro, but simple fact of the matter is that its not happening. Even though he did have a verbal contract with said party, the contract is directly related to criminal activity, which concludes criminal intent, which is going to end up throwing your case out on the spot, and probably have a case against the state for the illegal sale, transportation, and distribution of an illicit substance. What you have to remember..
SALE - An agreement by which one of the contracting parties, called the seller, gives a thing and passes the title to it, in exchange for a certain price in current money, to the other party, who is called the buyer or purchaser, who, on his part, agrees to pay such price.
that being said.. what a lot of people fail to realize is that.. even if you've got a joint, and your smoking it with friends, and you pass it around in a circle, that can be labeled as distribution and sale. What if your agreed price is free? just because you don't have any currency being exchanged does not rule out sale.
All in all, the best way to look at it is.. you just payed said amount to get that guy out of your life.. you'll never have to deal with him again.. it was cheaper then sendin out a hit for him, and its getting you the same result.. consider it money well spent and leave the courts out of it.. trust me.. im my game its in my best interest to know whats what in a courtroom.. it will be more trouble than its worth to sue!
as a side note, you never give your money to a dealer until product is in hand.. its the same concept as your buyer.. a seller is going to have product, and can virtually charge any price they want for this product BECAUSE.. if the buyer wants it bad enough, no matter how much they bitch.. if they see that you have what they want, they will pay the price. So.. switch it up on him.. show him your money.. let him get a big whiff of that shit.. and then slip it right back in your pocket till you got product.. if he knows youve got rolls, hes gonna give you product as quickly as possible, thats just the way greed works..