Vodafone around the world

I just did a quick comparison on buying a Vodafone iPhone 4s 16gb in the uk /aust /nz full details on image above
bottom line cost of ownership in USD UK = $1488 Aust = $1312 (lot less talk time than UK ) NZ =  $2059 Less txts less talk

Phone price in each country USD
UK=$766
Aust= $774
NZD= $799

So there you go apple charge basically the same for the same phone no matter what out population But Vodafone charge Kiwis about , whats that  25% more ? interesting