I am interested how much is average AIX Admin Salary.. in the USA or in the EUROPE.. or somewhere else... 
That's a bit like asking how long a piece of string is!
Different companies will pay differently to other companies. How much you get paid depends more on who you work for than what you know.
It also depends on where you live. I'm pretty sure an AIX admin doesn't earn as much in Thailand as in Switzerland, but then in Switzerland you can't take a bus across town for 12 baht!
yeahh in my country is the same 
yes i agree with scottn
I wonder is there any company paying about 5000$ per month for AIX admin 
I thinck no
In the U.S. $5000/month would be in the ballpark for a junior AIX admin. A senior position should pay well over that. Check sage.org for their latest salary survey information. SAGE Salary Surveys
want to live in the USA :o