Guild Wars 2

I was wondering if this was an expansion that you had to buy or not. Or do you just

Q: Is the expansion “buy to play”?

A: Guild Wars 2: Heart of Thorns is a paid expansion to Guild Wars 2, but once you buy it, there are no subscription fees. This means that you can continue playing and access future updates for Guild Wars 2: Heart of Thorns with no subscription fee.

https://help.guildwars2.com/entries/105801626-General-Guild-Wars-2-Heart-of-Thorns-Questions