There are actually a lot of subspecies of chamois.
Most of the chamois available in mainland Europe are ........European Chamois or Alpine Chamois. There are chamois in Romania, Bulgaria, Slovakia, Slovenia, Czech Republic, France, Spain, Austria, Germany, Croatia, Turkey, and a couple of those other Balkans.
The tiny and very boring looking Pyraneean chamois in Spain to the huge and colorful Romanian and Bulgarian chamois in Transylvania.
It depends on what you want.
There are actually a ton of places to hunt chamois. The problem for someone that doesn't live in Europe is actually the export process.
WTA has quite a few hunts in Europe for the various chamois. The price is a lot higher than what most Europeans pay, but they will help you with the export.
I have hunted chamois 3 times.
Once in Austria and twice in Slovenia. I have yet to take one. As DieJager said it is a matter of CM and age, and you have to find one that fits the criteria the forester wants to take.
On an animal that weighs less than a 100 pounds and only has about 9 inches of horn.
In Austria I was allowed a class 3 up to 3 years old on my black grouse hunt. We never found anything but a yearling so I didn't shoot one. We did have a fleeting shot at a 10 year old buck.
In Slovenia I saw plenty of chamois, but there were plenty of hikers on the weekend, and they ruined every chance I had to shoot.
On my 2nd trip to Slovenia we were back to the matter of age and inches. I could not find the class 1 9 years and up buck/doe I was allowed.
Austria is 280 miles from my house and Slovenia is about 500. I will be hunting in Slovenia 3 times this year and at least twice in Austria. Hopefully my chamois luck changes.
The outfitters I use are not ones I would recommend for someone that needed to bring their goats back to the USA and couldn't drive them home.
I have only hunted Alpine chamois.
The cost is generally fair.
$500-1500 for accommodations and guiding, this is on a self drive program.
Cheapest class 3 chamois are usually under $1000. These score sub 80 on the CIC scale maybe 90.
Most class 2 chamois are $1800-3800.
Most class 1 chamois are $2500-10,000, depending on the outfitter.
Spanish chamois are generally priced as a flat fee, same in France.
Everywhere else it is a game of measurements and crying.