That goes without saying.
If what you mean is it's always best to buy from established dealers, then my question is: Best for whom?
I was going to list my predate very soon. I'll probably hold-off in the wake of this nonsense. When I do decide to sell it, I can guarantee it'll be priced for at least 30 percent less than any of the 'good ol' boys' would be asking.
I'm not sure why the abrasiveness, but take a few breaths and reread my comments. Nowhere did I state or imply that. This type of foolishness and negatively is why this site in particular and pool in general has gone to the dogs.