Changing server
If you transfer regularly there is a fee. How much depends on the population of the server you want to transfer to.
If you only just started and don’t mind starting over, it is apparently possible to switch servers free if you delete all characters.
There are 2 ways to transfer between servers:
1) Pick one from the list, click transfer and pay a fee. The fee depends on the population on the server you move to (with high pop servers being more expensive) and has to be paid for each transfer.
2) Delete all your characters and you will be asked to pick a new server when you create a new character. There is no time limit on this, you can do it even if you’ve been playing since launch, but generally it’s only new players who are willing to do it. Later on farming or paying real money for the fee becomes more appealing than losing all your progress.
You can also guest to another server for free and do everything except WvW, but sadly not between US and EU servers.
“Life’s a journey, not a destination.”
There are 2 ways to transfer between servers:
1) Pick one from the list, click transfer and pay a fee. The fee depends on the population on the server you move to (with high pop servers being more expensive) and has to be paid for each transfer.2) Delete all your characters and you will be asked to pick a new server when you create a new character. There is no time limit on this, you can do it even if you’ve been playing since launch, but generally it’s only new players who are willing to do it. Later on farming or paying real money for the fee becomes more appealing than losing all your progress.
You can also guest to another server for free and do everything except WvW, but sadly not between US and EU servers.
the right answer is here