Anime Assault uses only Priority Mail materials 
(which is FREE when shipping via Priority Mail).  
The last package I received from prop_lady 
consisted only of the Priority Mail box, the cel, 
and a manila envelope (not worth anything much in 
terms of protecting the cel from being bent or 
whatever).  In the past, you may have been lucky 
to find some newspaper to somewhat "cushion" the 
cel.

Bottom Line: they're not spending anything on 
packaging (except maybe if they got a nice bid on 
a certain auction, then they might splurge).  
They're not even using cardboard or extra 
Priority Mail materials to better protect the cel.

[MY ADVICE #1 TO MARCIA]

I'm not sure how you're going to handle cel 
shipments now, once you move back to Canada.  All 
I can say is that at least you should package 
them better (particularly with some type of stiff 
backing boards).  Then perhaps the "handling" fee 
would be justifiable.

Secondly, if $3.50 is too low to cover your 
shipping costs per auction, then make sure you 
state a shipping cost that reflects what you 
require.  It's time to be above board with what 
you sell and claim, not to create some 
controversial miscellaneous fees.