The costs to get to your facility/home, supply the shoes, nails....let us not forget he needs to purchase rasps, nippers, hoof knife, an anvil, hoof stand since nearly every farrier today has at least one to protect and give better longevity to their back. Now add to that a truck or van and out fit it with specialty racks...a forge of some kind, fuel of gas/propane or coal....
Now my farrier goes to clinics, continuing/ongoing education classes and workshops. He also participates in those "challenges" that allow him to put those letters after his name....
The higher the degree of earned excellence, the more they are worth and can charge....
Today he now teaches some of those classes as he has won numerous awards national standing...
No different than going to a doctor or specialist....my farrier is a specialist in hoof care and well respected and sought after by many....he charges and I pay the bill.
I've seen several who were "cheaper" and cheaper is what you got.
There is a difference here by me of a so-so trim and quality...
I take & want quality, my horses deserve it!!
So, we are about $50 for a trim, $150 for trim and front shoes...no idea about all 4 done as have not had to do that thankfully.
My horses are carefully worked with and when we need the front shoes we hot shoe....something not everyone does but here where wet, damp and ick is for months on end, sealing the hoof fresh trimmed with a hot shoe seals out germ warfare from creeping in and mates the hoof and shoe fit perfectly..

come to think about it, my farrier mentioned he may hot shoe even if its a trim as its that time of the year for wet, soggy and softening hooves from ground holding so much moisture.
It also helps that when the farrier comes he has a full days work to do with 3 houses all close enough we could walk our horses over to one location. 11 horses, 5 of which are shod all 4, the rest are either trim or trim and fronts..
He's here on time, keeps appointments or calls if he is delayed by more than 1/2 hour and or arriving early.
Knowing he is what he is...he is worth what he charges and more...he knows it too but is also reasonable and understanding that money sadly does not grow on trees and everyone is hurting with the escalating costs of our pets lately.
🐴...
jmo...