Its 100 times better to use a locally procured sim card in Europe than take one from Clay Sim Cards. We did the biggest mistake of getting ourselves a European sim card from clay. After using their sim card across Europe, we realised we could have done a better thing by just getting a local sim card from there and getting a 5 euro top up wheneer we wanted. Clay sims are such scammers that they sent us a bill of 17000/- for 15 days. And when we asked them to verify the bill, they said that the detailed copy of the bill has been emailed which we haven’t got yet. After several emails and follows, we got our original bill which was close to 10k and accurate. Its advisable to double check their bills or infact only pay once they bll has been verified by you as their refund process takes ages.