How much did easyjet pay for Go? How much did its fleet of A319's cost to buy?

hi

Im analysing easyJet’s financial records for my degree, but i’m having trouble finding out how much the airline paid for Go Fly, and what its fleet of A319s cost to buy.

Ive searched the internet to no avail, and was just wondering if anyone could point me in the right direction – is there a website etc that shows how much they paid?

any help will be much appreciated

thanks