I had two stallions gelded in OK before we moved to Missouri. It cost $125. The younger stallion (3 years) had to be given three shots to put him out/down... We thought it'd take forever for him to get back up, but he popped up right afterwards... She was a good vet...
I have been doing all my own colic care recently using Aleve (Naproxen) and aspirin for pain, tubing mineral oil (being very careful not to get it down the windpipe) and soaked beet pulp and generic psylium, and haven't lost one this year. We've had 8 or 9 colic episodes... We lost four pregnant mares last year to the so-called experts... The vets out here are worthless and take four hours to respond. By that time, it's too late.
otoh, I had a vet in Colorado that was worth her weight in gold! (and she wasn't a small woman <g>!)
After watching vets geld horses and a farrier castrate a goat (with a knife) if I had access to anesthetics, I'd do it myself... It's not difficult. Once the animal is sedated, you clean the area with antiseptic, you slice open the ball sac, pull the testes out, abraid the cord, and pull... The testes snap right off, the cord snaps back and seals itself off and that's it... Afterwards, you just make sure the area is cleaned off periodically. If there is pain, there is aspirin or Aleve...
I switched to banding the bucklings (goats) now and it's a piece of cake... There is a little bit of discomfort initially, like any other procedure. But in a few minutes the buckling is up and running around like a banshee...
I also disbud goatlings and I've seen the same thing... After about 5-10 minutes the baby goat has forgotten all about its head and is up and running around... I disbud at 3-5 days for the boys and a few days longer for the girls.
I wonder why horses have never been banded??? They band cattle, too. You can be sure that 50 - 75 years ago, vets weren't called out for castrating horses... The farmer/rancher did it themselves and a crap load of horses still survived... I wouldn't do it, however, without some kind of anesthetic and pain reliever afterwards...
Btw, Aleve (aka Naproxen) was originally prescribed for horses... It was too expensive, so it was approved for human use and you could only get it with a prescription... Obviously, you can now get it OTC... It's in the same NSAID group as Banamine.
As for aspirin, studies have been done on wild horses and they have noted that wild mares that have given birth will seek out and chew on willows for the discomfort.... (Willow bark contains acetylsalicylic acid, which is where aspirin originally came from... I guess it's cheaper to re-create it in the lab.)
I'm moving closer and closer to more natural healthcare and natural care in general.
And, I sure hope I can find a good vet out in Missouri when we move... We had a good one in the Bruner area. He was a mobile vet located on the west side of Ozark.... So, if we find a farm in that area, we call always go back to him...
Kari