I want to start a company and I want to know how much someone pays to send a satellite.
It depends on what the satellites for, your budget, etc.
CU-27 modernized (directors words) is 0 rubles. You forgot as you ,,launch the shuttle,, themselves too.(no any dollar in pocket).
Mainly depends on how big (mass and volume) and where you want to put it (altitude). If there were something special or odd about it, you might need to pay more to have the launch provider deal with it. Most satellites aren't very light, but if you had a big empty box, you might have to pay for the entire launch if there's not enough room to allow another payload to share with you.
Costs are also somewhat fluid based on contracts. But probably something in the order of $10K/kg for LEO to $30K+/kg for GTO are in the ballpark.
Spacex.com is one of the few providers that actually has a price list on their web page.
The wikipedia pages on launch providers have a very few costs listed (such as http://en.wikipedia.org/wiki/Comparison_of_heavy_lift_launch_systems).