A pet peeve of mine, as a stamp collector? I just HATE to see my package coming from a stamp dealer …. with no stamps on it. Please sellers, don’t use those ugly and highly un-philatelic postal labels and meters. Of course I would never neg anyone on Ebay for doing so, but it saddens me as a philatelist to see another philatelist snobbing stamps!
Sometimes I go a long way to find a dealer in tiny and under_represent countries just to receive a package with nice and unusual stamps on it. It is very disappointing for me to receive a package from Papua New Guinea or Peru franked with labels.