I always prefer trades over sales, but I usually 
am mostly looking for trades of cels that are 
on my wish list. If you are interested, the wish 
list can be found here (even if it is a little 
out of date):

http://www.dpo.uab.edu/~marcus/p-wantlist.html

In regards to the new cels, I usually do not sell 
or trade them. I usually need some time to let the 
warm feel of having gotten that cel fade before I 
can bear to part with it. However, if you really 
want a cel or you have a trade that you think I 
can't pass up, it is worth a try and you probably 
should ask. I do not bite as long as the request 
is polite and I do answer all my e-mails even if 
it sometimes takes me a month to do so.

Marcus

FWI  On the new cel page, I do not mark cels with 
TOO or Don't ask. For this reason, do not be 
surprised if I say that the cel will not be sold 
for any amount of money or it will only leave my 
collection as part of a trade.