[YoungManGW]

Putting aside for a moment the wider ethical questions re. traders, I'd like to address the economics. There seems to be a notion abroad that rascally traders will somehow outbid hard-done-by collectors (assuming for a moment the Venn diagram of these doesn't intersect). This is surely nonsense. Traders, by definition, sell on, so it's more likely that their price limit is lower than that of many collectors, to provide for a margin. Anything's only worth what people are prepared to pay for it. And, of course, fashions change, driving prices both up and down.
Regards,
Richard