Mine are getting through a large bag a week. (Either Pets@Home or The Range, about 3kg)
I've seen bags in local Petshop, but they are smaller.
Supermarket, very small and expensive. Don't know how long it's been there.
I've thought about finding a stable yard and trying to buy a bale, but it's a pain to transport and I'm a bit
with horsehay, there can be big sharp pieces in it.
Farmways Online does 4kg bags (IIRC £4.99 or £5.99 + p&p) but I can buy several and keep in the garage.
Where do all the other owners shop?