Hi,
I have three converters which I was planning to put onto ebay later this month because we are in the process of repatriating back to the US.
Here are the specs:
converter #1: 100w - 1 amp fuse
converter #2: 450w - 4 amp fuse
converter #3: 450w - 6 amp fuse
I think the reason you may find they are expensive to ship is because they are extremely heavy. In fact, it weighs 3.1 kilograms and according to our Royal Mail rate booklet, it would cost £7.20 to ship at the standard parcel rate (up to 4 kilos).
If you are interested in making me an offer on any of these, send me a pm.

Kellie