Since Exile is available at more places than Kobo now, I thought I would list some of the places you can buy Exile. Sadly, Amazon isn’t one of them since Overdrive seems to not distribute to Amazon. Or BN. ( Though BN might simply be very, very slow.)
And yes. I am gnashing my teeth over the fact that one of the biggest e-book distributors doesn’t distribute to the biggest store.
Note: This list is incomplete, since Overdrive distributes to a lot of stores.
Kobo ( all the stores.)
I am not certain if it is available in Ibooks. It should be, but since I don’t have Itunes, I cannot check.