criso
Coming over here & taking your jobs since 1900
Because they also have fairly decent grass all year and are only in overnight in winter they don't eat that much. 12 horses get through 2 round bales a week - so YO is effectively getting about £90 per bale. I get that we're paying for storage and the convenience but when friends pay about £35 a bale it smarts a bit! I try to look at it spread over the whole year to soften the blow. Overall I think it's still fairly good value.
I do see what you are saying when you compare it in that way, but you could be at another yard (like I was) where the grass isn't as good so hay or haylage counts as the main forage.
A large bale of haylage is generally considered to feed 3 horses (based on 8 to 10kg per day) per week. And that is average, I would get through more with a big tb on poor winter grazing.
That fact that yours does for 6 is a testament to how good your grazing is and if everything else is good, sounds like a fair deal overall. Actually would be cheap round here but you can't compare different areas.
And the convenience of storage and care is especially useful with haylage. There is always the odd bale where the plastic has been pierced or for some other reason all or part of the bale is not useable. My experience with a yard that provided haylage was if that happened, you alerted the yard manager or owner and another bale appeared. If you buy in your own you have to get into discussions with the supplier to get it replaced and if the delivery was a while back when the damage happened. Someone at my yard recently bought some small bales of haylage but from two different places. When they found a dodgy bale, they had to take the hit as they weren't sure where it came from.