I hope this comes off as a semi-coherent, honest 
opinion and my general feelings on the matter....

First of all, I rarely make issues over the cost 
of something I collect or want.  They're 
expensive for one reason or another, and all it 
takes is a simple, courteous question to find out 
why.  I will, however, often bemoan the fact that 
I have gotten into a number of generally 
expensive hobbies:  Anime, simply because of the 
sheer volume of what is available.  Home-Theater, 
because the good equipment is expensive, and the 
sound formats are constantly evolving--forcing 
periodic new hardware purchases.  Computers, 
because every 18 months, there is another 
increase in capabilities--would anyone consider 
putting over $6000 into a *single* home-built 
computer?  Probably not.
I do all this because I want to.  In some way 
shape or form, all of the above 
activities/interests have advanced my career, or 
gotten me out of the house, meeting new people, 
and generally acting like a mostly-normal, happy 
human being as opposed to a territorial "cave-
dwelling" computer geek...

Anyways...
To answer your question:  Yes, I've often wanted 
to come across inexpensive quality cels in 
quantity, wether I liked what was on them or not.
I would *not*, however, try to sell them for 
profit.  I am not a dealer, just a fellow 
collector that believes in sharing my good 
fortune.  I know this has more to do with how I 
was raised more than anything else.
[mental note made to thank parents somehow]
Being that sort of person, I would either 
announce publicly what I found, or, if possible, 
buy them to turn around and sell them to those 
interested for *exactly* what it cost me.
With regards to my current collection, all my 
cels have pricetags on them.  It's what I paid 
for them--what it was worth *to me* to make them 
part of my collection.  In the near-term, I do 
not see myself ever selling a single cel that I 
have.  In the distant future, who knows?  I may 
lose interest in my chosen hobbies and sell 
everything off.  The only way I could ever think 
of wanting to make money off a sale is if it were 
forced by some other need...