Hello.
First off, his last call was AA7DP.
And, second, in every case there was to be some sort of trade, not an actual sale.
He was in HIS location when the offers were tendered, not yours.
You can not argue theft, as this was to be an "Even Trade".
You have almost no legal recourse in this case under Washington state law.
And, no, this would have to be filed under Washington state law.
Where you are from or sent something from has no bearing on the case.
You chose to send your property to his location.
And, there is no set dollar amounts.
Under Washington state and Federal law, there was no actual theft
Now, the license he held were all cancelled in 2012.
In short, the guy knows the law and decided to screw a bunch of people.
Not one, not 2, not 3, but well over a dozen, and counting!