In my opinion true cel collectors collect cels, 
not try and profit off of them because they know 
or think that the cels will become high priced 
later on. I would be really upset if I wanted to 
buy a cel that was already sold and to later see 
it on eBay or any other type of auction going for 
more or even double the original price. It's 
upsetting to hear a person would have that kind 
of intent in trying to profit when they call 
themselves cel collectors. I personally don't 
collect dbz cels and know cels are high priced 
but the cels are only worth what fans are willing 
to pay and if you are trying to feed off of that 
then it's pretty sad to hear.