Re: Shipping costs
I'm in the US so I don't know if this will help, but go to Localization --> currencies and make sure your currency is the default and not the US dollar. This was an issue for pricing for someone else.
And also, there might be an issue between ounces and kilograms? I think default product weights are ounces? (I'm in the US and have never had to make changes to any of this, so don't quote me on it.) But maybe that's a place to start looking for answers?
HTH,
Lesli in SW Florida ~ writer, teacher, and dodging hurricanes!