My pet peeve in regard to collecting would have 
to be when I make an offer on a cel in someone's 
gallery, but I get NO reply. I have gotten plenty 
of "no" and even "hell no" replies, and that all 
fine and good. But, when someone takes the time 
to make you an offer on a cel, take the time to 
reply to them. When I get an offer on my cels, 
even ones clearly marked "Not For Sale", I always 
reply because it is kind of flattering to have 
something that someone wants so badly. 

As for selling, my biggest pet peeve are the 
hagglers. You know, the people who want to 
bargain on EVERYTHING! "Hey, why do you have to 
charge $5.50 for shipping?" Answer: Because that 
is usually how much it costs! $3.50+ for 
Priority, $1.10+ for insurance. I'm not going to 
lose money on shipping, pal. Or maybe it's the 
wizard who offered me $75 for a cel(which I paid 
$120 for) and when I replied "No Thanks" and told 
him what I paid for it, he said "Hey, I saw 
someone get a cel like that for $50 a month ago." 
My reply was simply, "Email him." The interesting 
part is that I have the ONLY cel from that 
sequence in existence on the internet.