Before when? The panic buying began long before the secondary market for "vintage" tobaccos became a thing. In 2007 Germain's missed a few shipments and people went nuts hoarding Penzance. Nobody gave two farts about the other Esotericas and you could pick up "old" tins of "legendary" tobacco for bupkis.Before there was a bulk sale on Eso and it was not sold out for 24 hours pointing out that high demand is purely due to the resellers market.
Buyers always set the prices, except in a monopolized market. Sorry, but true.
Anyone who has a real issue with eBay listings can simply report them, since all of these transactions are in violation of eBay regulations and are technically illegal. Really, go ahead.