Thanks Anthony
It's written in C# (the new language that's designed for .net)
I tried to Attach the file but it wouldn't let me, Does my attachment quota increase with more posts? zipped it's only 12k
It's not quite ready yet, but I wanted to make sure it was something people would use before spending more time on it.
I'd like to keep it a light weight thing that doesn't require installation, this does put a limit features.
But I'm open to suggestions

I will also post the source at some stage, but I'd like to clean it up a little first.
I'm not sure if it's working properly though,
At the moment it works the VAT and Duty of the purchase price, then Adds them all. is this correct?
Or should Duty be work out first, added and then VAT on the subtotal?
(hope i'm making sense here)
Basically I'm not sure of the order of operations needed.
Also.. shipping, I don't know how to include that.