Laser has nothing to do with Maestro, Cirrus, Plus+ etc. The former is a debit card system specific to Ireland and cannot be used for purchases abroad. The latter are additional card options which allow you to withdraw money from your account using ATMs abroad. In € zone countries the same charges should apply as in Ireland. Note that Sweden and UK are not in the € zone though so the charges may differ and there may be other issues militating against the seamless use of these card options in those countries. I'm not sure.