I've been collecting…

I've been collecting minerals for years.
Sometimes when trading with other mineral collectors, money can come into play.
We all want to build our collections.
Maybe my specimen is "worth" more than what I'm trading for.
Maybe the other person's specimen is worth more.
And, sometimes, maybe one of us wants a specimen - but we don't necessarily have something to trade.
How does this make me a commercial collector - or a retailer - or a mineral dealer - or a store owner?
It does not - and it should not.
This clarification should be included in the guide.