At our yard our bills are 4 weekly and there are different options on the livery. We pay the YO for the stable, straw, hay and use of the horse walker and for me at the moment I pay £172 for that. It's a bit more now than during the summer as the horses are not going out so much and therefore using more hay and straw, everyone pays this but differing amounts according to size of stable and horse/pony. My RI is also the yard manager and is self-employed and she will do mucking out, exercising, teaching, seeing vets and farriers if needed, virtually anything the owners can't do for themselves. For me she mucks out, turns Mac out and gets him in, buys his feed, and is riding him 3 or 4 times a week as I am unable to at the moment. So her bills vary from month to month, usually between £250 - £275. So for both bills that's about £105-£112 p.w. which is probably about average for full livery in this part of Kent and from what I hear I think we get a better service than a lot of places. I know if I am ill or want to go on holiday Mac will be left in goods hands whatever happens.
When we had our first horse in 1975 we paid £6 pw for grass livery. How times have changed.