Yeah but lucky they were friendly and it wasn’t awkward
In my opinion @Linamine24, I think this is a bad practice. Your having 3 people show up to purchase 1 item? The key word you used about this transaction is perfect: lucky!
Your inviting a situation, as you already are aware, that could get very heated or ugly and you'll have no control over how people react. And it only takes one of them.
Again, my opinion, I strongly urge you to never do this again.