In the trades I've done in the past, both people 
pay their own postage. I have heard of 
arrangements where people who don't know each 
other fall back on "the person who initiated the 
trade sends their cel first", but that still 
leaves room for said person to get burnt.

I've acted as an escrow in the past for people 
doing Hard Rock Cafe pin trades as there seems to 
be a little bit higher "burn" risk there - I've 
never been cheated by a cel collector, but can't 
say the same about my fellow pin collectors. 9_9  
Escrow does double the postage involved, but if 
the cels are worth enough, it can be nice to have 
the peace of mind. I know *I* would look into 
someone who could be an escrow if I were trading 
any cels of incredibly high value.

Many Sharp Smiles,
--Drac