$4500 per month in Amercia is a good salary - you are rich compared to me.
However, do not say this to a Russian because you are actually not as rich as it appears. You really only make about $3400 after taxes. I also your job does not pay for your transportation to-and-from work so you have to pay at least $700/month for a good car and gas and insurance.
Housing is also substantially more expensive in America than in Russia. You probably pay about $1300 per month plus utility bills.
Plus there are other bills, credit cards, food, clothing, gas, water, electricity, internet, student loans, etc. etc. etc.