As a vintage pen guy, I rarely buy a currently-manufactured pen. When I do, the pen is invariably used and bought at a pen show or from a forum like this one. Now, I am considering a Pilot Custom 823 F with its plunger (vacuum) filler. I see I missed a couple of 823s on the FPG classifieds, but they are selling new for $336 on almost every USA online retailer I find.

My question: Which USA retailers actually test and tweak each new pen they sell before sending to their customers?