eu > en 
1 da ad. [neketsua gertatu] to be hard/difficult, to take a lot/much; to have trouble doing sth
gezurrik ez esatea ez da asko kostatzen: it isn't difficult not to tell lies
atsegina izatea ez da asko kostatzen: it doesn't take much to be pleasant
2 da ad. to cost
zenbat kostatzen da bazkide egitea?: how much does it cost to become a member?
kosta(tu), kosta, kostatzen