Hey there @Lucie Horakova, welcome to Community!

Of course! Please click roaming at the top of the webpage below, and choose Turkey from the drop-down box to view the charges for calls, data and texts:

https://www.idmobile.co.uk/help-and-advice/international-and-roaming-charges

Any other questions, do let us know!

Kind regards,

Tyler

I'm going turkey in two weeks can you add roaming to id

Nope, iD don’t sell any add-on packs for roaming, @Mariasmum88. 

You will be charged at the iD rates for Turkey, if you use your iD SIM card while visiting in Turkey.

Thanks for your reply