Yea thanks a lot, realy good input from the guru's above
Yes it was declared as 150GBP ($290)
Postage was i believe ($140) (This must be sorted out as im sure 10KG wouldn't be that high? Came in a 25kg express box, but thats a different matter :P)
So they also told me VAT on WHOLE charge so 17.5% of $430 = 50 pounds. So i guess it was right.
Just forgot to add shipping costs. Yep got my invoice just wanted to know how numbers were calculated.
Thanks for all the input everyone!