Good advice alittle late
I cant understand why you would send the parts without all the cash?? Good guy Im sure your are but this is business..You Had his $600,He really didnt have any choice,either send the rest or (if you were a really good guy) Get a refund..Its really hard to be a good guy out there unless you know the person--I have been a victim several times myself--Goodluck recovering your parts or money...