I would love for a roundbale to last 10 days!!! I like your guesstimate, however they already got a good chunk gone & it's only been a day. Yes the hay lasts waaaay longer keeping it in the barn & pitchforking it off, but this is for the convenience of my son who will be housesitting when I am gone for a few days. And I am still mad at my husband, he should've come down the hill in 4Wheel Low, that's what it there for! He said I was rushing him??? He was leaving for his convention at noon yesterday, so when am I supposed to get the bale? A week before? It would already be gone by the time I met him in Vancouver! Men! By the way, his horse (the loud colored paint) is the major hay inhaler.
SO... hay costs me about $50 per month...