I'd have to agree. When you setup a listing and use the calculation method for each bidder where ever they're located, sometimes I wonder what the formula ebay uses looks like.
I once placed a bid without checking shipping cost first. Imagine my shock when I realized I was going to pay $90 shipping for a Zorro card! Fortunately I was outbid. Lesson learned.
Edit: I looked at my old emails, and it was actually $185.00 shipping!
I do add a little bit of a service charge to ship internationally because you have to fill out the form and I try to be more careful with packing since it's going further but it's no where near that much.
Understandable, and I have no problem with that. I have a suggestion, though. Check your PM.