Vouchers for Edinburgh Dungeons or Mary Kings Close Edinburgh?

Hi, I am going to Mary Kings Close (Edinburgh) and the Edinburgh Dungeons.... its quite a ot of money so i was looking for some printable vouchers or places i could maybe get some? I was also looking for some reviews if anyone has been to any of them.. no links for that please just a breif from you if you have visited. I really need some vouchers so hope you can help!! THANKS:D!!!!