Would almost sound like the place is being taken over by small gang type stuff... pressured into arranging deals and then bam they jump in the middle and make off like reckless outlaws with the loot, but an organized gang would wait until the owner of the place had made the deal and then taken it from him. Then again, if it's stolen before the trade has been made, then the owner can't claim that he was robbed.
Anyways, the important thing is you are unharmed. Possibility they might have fired a blank at you? If not then those are some real dumb thugs that might end up killing someone. They'll definitely be dealt with one way or another if they continue to rip off people that way. Stay safe!

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"There's no right, there's no wrong, there's only popular opinion." - 12 Monkeys.
The hemp plant is our perfect symbiote! Down with capitalism, materialism, fascism, war, and superficialness! Long live the biosphere! *Proud offspring of a draft dodger*

Pictures of my first grown buds!