Sign up with PrePaid Legal. They have a few different plans, they range from $17/mo. (basic individual plan) -$125/mo. (business plan). You'll be able to have an attorney send him a threatening letter, it's not a guarantee that he'll pay but it may scare him enough to make him send you your money. I've used them a few times in the past and it worked out well (I have the $17/mo. plan). The have attorneys nationwide.
No, I'm not an affiliate of theirs.
No, I'm not an affiliate of theirs.