Bob, Not harsh, sensible IMO.

It sounds like you know the difference between genuine probs that you may help out with and those that don't know how ebay works or those that don't care.

If you have your blocks set, those with strikes, those not verified, that should weed out most pests. And as soon as you get a non payer, opening a case either gets them to pay or they get a strike and disappear.

I keep it simple, professional with a no nonsense approach. It works well. 😉