The Capra World Slam.

[Mojave]

Takin is closed, not sure about goral and serow.

 

[Mojave]

Right now here in Europe for reasonable money you could hunt.

4 spanish ibex $4500-12,000 x4
2 spanish chamois. $5000 x2
Alpine chamois $4000
Balkan chamois $5000
carpathian chamois. $5000

plus mountain goat $15-20,000

NZ chamois $10,000-14,000 for both
NZ tahr

That's 12.

If NZ chamois and Tahr don't count.

You could hunt Tajikistan for whatever the cheapest ibex is $12000
and the two ibex in Mongolia $15,000 each