What will it cost to change the PSN ID
The first change is free, so choose your new online ID. After the first change, you may pay € 9.99, unless you subscribe to PlayStation Plus. For PlayStation Plus supporters the price is the price of € 4.99.
You also have the option to return to your online old ID provided it does not break the terms of the service (ie, you cannot have a disappointed name). The reverse of the old online ID is free. You'll find your old online ID and you cannot get it back to another user.
Even if you change the Online ID several times, you can always return to any of your online IDs. In order for your friends to identify you after changing IDs, you can display the old ID next to your new ID for 30 days.
What new online ID will you choose?