Events Tickets Profit for the comany I am trying to create an event ticketing system with drupal 7 and would like to insert the company's commission to it.
In simple explanation.
If event planner ticket price is $x 
Company commission rate is 15%

The planner to choose whether the customers pay for the commission + ticket or the planner pays upfront.

Is there any module that support something like this?
If you're looking for a pct fee on top of your order, you've got a couple of options, the quick and dirty one is to create a fake tax of the percentage you want, see http://www.drupalcommerce.org/user-guide/tax-configuration, another option is to multiply the amount by 0.15 or whatever quantity on the rules event you choose. 

For fixed fees you can check Commerce Fees

You've got also commerce discount and commerce coupon that do the exact opposite operation, so you can check how to add and modify stuff in the checkout, if you're looking for a more advanced solution.