Call me crazy- sent something to a member without payment

Was negotiating with a fellow, giving him a list of what I needed for my build on the other side of the country (never met him before). When I was done with the list, I asked how we were going to close the deal and he told me the parts were already on the way. He sent $1100 worth of parts, and paid shipping without receiving a cent. Four years later we are good friends, although I have still never met him!