> seems to be "how much did I sell something 
> similar for?" in this case. Did the 2x cel guy 
> sell too high? Did the 1x guy sell too low? 
> There's no right answer unless that same cel or 
> something a couple frames off is resold again.

Well, if as a dealer I consider that both are
worth buying, it mean that I think that even the
most expensive one isn't too expensive.
The lower one may be a very good deal. The higest
one an average deal. Both of them are worth
their value (and I usualy end-up increasing
my margin on the lower one and decrease it on
the high one to get an average). They are simply
not coming from the same source and their seller
don't attach the same value to them... :)

> big reference on collectors' experiences with
> collecting their favorite shows

Bad, bad idee ! People are usualy paying much
more for their favorite show than the normal
market value :) Just because it's their
favorite show and they have to get that damn
cel... :)

Cheers,
Ynan Stettler