But at the same time when someone emails me 
and tells me point blank that they make a living 
by buying stuff and selling it on ebay it does 
piss me off. This person does not work, ebay is 
her "job" 

Since when has trading not been "work"?  

I realize everyone is entitled to their own 
opinion, but my opinion of someone who is simply 
taking advantage of a popular show and buying up 
every single cel they can get their greedy hands 
on is that they are the lowest of the low. 

Okay, but why?  You stated quite 
eloquently that you don't like this practice, but 
what's your reasoning?  This is simple supply and 
demand.  Anyone who goes into business for any 
reason is, on some level, going to be "in it for 
the money".  I don't fault the local grocery for 
stocking the most popular flavors of icecreams, 
or the local Tower Records for having a million 
zillion Backstreet Boys albums.  So what's the 
problem with trading in popular commodities?

I just don't think it's reasonable to vilify 
someone making a living from your hobby.