Sounds like you are selling your home on your own. Commissions are always negotiable and they range anywhere from 4, 5 or 6%. If you are selling your home yourself you would pay half of what ever percentage you choose here to the buyers agent.
If you are simply asking what the going rate is for selling in general the price of the home does not matter. If you were to choose 5% then 2.5% would go to the selling agent and 2.5% would go to the buyers agent.
Hope this helps and good luck!