Self interest is always hard to surpress

And I find nothing wrong with it as longs as one is ethical. Some collectors simply do not have hundreds or thousands of pounds
to spend on a paperweight so they are left hoping that the piece will sell for less than "list" price.
Those who do find the "gem" have spent time and resources learing about the subject and scanning all the listings,
not just searches for Baccarat or Clichy. Is it wrong for that effort to be rewarded every once in a blue moon?
Is it greedy to hope for a cheap Clichy, Baccarat or XYZ? If you're planning to flip it then yes, a little - that's what fuels trading,
if you're a small time collector...?
If you are not a dealer or have deep pockets it is hard to buy the "good" paperweights simply because they are incredibly expensive.
However there is a difference between advertising something as less valuable than it really is and
advertising a fake or much higher value than it really is.
Collectors who are new to glass may be fooled by a misattribution and pay a lot of money for a fairly worthless piece of glass.
Personally I don't consider posting a live auction 'faux pas', but I do prefer they wait until the bidding ends.
I never pay any attention to what the seller writes about attribution anyways, I make my decisions solely based on the
pictures and description. When I see a blatant fake or misattribution I usually email the seller.
Those who are listed with BIN's far lower than the real value disappear so fast they don't have time to appear here.