I'm apologies beforehand too all dedicated vets...
They are better at accounting than actual caring about animal's.
Even the charity vets let animals down and will only see an animal of it lives in a certain distance from them or postcode.
As for chicken vet???? Where? Their costs are insane. It's all about ££s that's their care first and foremost.
There should be a small SET fee for a visit and a reasonable fee for treatments and as for operations that's another matter depending on time and cost of tools time and difficulty
But the charges shouldn't differ from place to place. That's only my opinion.