As is mentioned above they still issue pink slips at the bank for money imported from outside greece.
If you are buying the property through an agent then insist that they obtain the pink slip on your behalf.
But as you will require an account in Greece if you want to pay the electricty bill by direct debit then open an acount in your name (you will require a greek tax number to do this and passport)then ask for the pink slip when the money is paid into your account and ensure that they endorse it with
agopa akinhtoy which means the money is for purchase of land for building
good luck with your purchase