Next week I will be there, buying the whole crate! You can easily freeze it, so it should last through the winter ;-)
I found some again at my local Migros in Uster last night!
This time of the year you can find kale pretty regularly at coop and migros.
I've even found tuscan kale in Winterthur at a organic food store.
I'm sure the diehards have spotted it already; Federkohl is currently in season, in the supermarkets and has been for a few days already!
I haven't been able to find kale in the supermarket but found it at the Saturday market and thought it was fairly cheap.
I have seen it in the local Migros since last week.