... in the honesty of the cel collectors out 
there, if they get a wrong cel from a deputy 
service, that they send it back.

I did not loose a cel until now, but I got wrong 
cels recently and sent them back immediately, 
hoping all other will do so, too, if they get my 
cel someday.

But you are right with unknown freebies - you may 
think it is a bonus cel (especially if you don't 
know the series) but perhaps it is a cel from 
another buyer, that the seller has put together 
in one bag ....

I think it is a good idea posting cels here 
people are missing!