Honestly. It’s gob-smacking. I just had the first set of my spring shots done last week. My vet is cost conscious and wonderful. Even then, the first set cost ($210/ea) what both sets cost me in 2018.
I’ve had some serious back-and-forth the last year or so about whether I can truly afford horses… and I keep my horses at home. I’ve been considering moving but… where would I even go? It’s expensive everywhere.
My round bales mercifully have stayed consistent but good hay has gone up about ~$4 a bale. Shavings are about $3 more. Grain is anywhere from $4-10 more, depending on what you get. My horse used to cost me $120/mo to feed, and now he costs me about $290/mo.
I don’t even want to start on real estate taxes. My assessment doubled from 2023 to 2024, and my taxes jumped up a gut-twisting amount. No work done on the property - this is just the market in my area. My assessment falls in line with current real estate market (as it should), so this is not a gripe about my local assessors. While someone might read this and wonder “what do RE taxes have to do with anything?” – they have everything to do with boarding, because the more expensive living gets, the more expensive rent gets, the more expensive boarding gets because boarding is not a property’s “highest and best use” and boarding barns will be priced out of existing sooner rather than later in light of this. Boarding is almost always proportionate with rent cost[s] in a given area.
And my house insurance (which includes various umbrella policies). WTF. It went from $2,200 a year to $4,600. 
Callista17, I don’t know what part of the country you live in, but I keep my horses at home in the definition of a ‘self-care’ type deal. I got a pretty good pulse of what it costs to feed and keep a single horse on a property. $100 doesn’t even cover the increased cost[s] I’ve seen post-pandemic. I know it’s not the answer you want and I really commiserate with you on increasing costs… It’s just everyone is feeling the pinch, everywhere.