In order to check current Primavera P6 license price we can go to website : http://shop.oracle.com
Click on menu Browse Products -> Software -> Applications -> Primavera
Now we can see the Primavera P6 price
Click on Primavera P6 Professional Project Management, we can see more detail on that product.
1 P6 Professional license cost : 2500 + 550 = 3050 USD
Software Update License and Support for First Year (550 USD) is a must. From 2nd year it will be optional.