A:
A commitment to buy, and then no payment.
I had four of these on my recent 'Chip Liquidation'.
Very often our desires are larger than our financial ability (been there myself).
When it comes down to paying the rent, or paying for the chips they spoke for, reality sets in.
NO. They shouldn't be outed. They probably have enough problems already.

B:
You were silly enough to send the product before receiving payment.
I did this once (never again!), and my stupidity cost me $264.
You can't trust ANYBODY! (A line from a blues tune: If your mother says she loves you, check it out.)
YES! They should be outed.