Rizla concept cigarette tubes

Due to the economic recession and such, I decided that in order to save money I would roll my own "real" filtered ciggies using the below machine



I got the machine and 500 tubes for around 15 euro on ebay, I am nearly out of tubes now, on ebay it works out at approx 2 euro per box of tubes delivered. I was just wondering if anyone knows of any bricks 'n' mortar shop in CORK that sell the tubes and what price are they. Alternatively does anyone know of any websites that may sell the tubes cheaper

Thanks in advance