Hi All. I'm new on here & need some help sourcing mugs. I bought 36 white 10oz dye sub along with my press from Novachrome. As I'm in N. Ireland, their shipping cost is very high (£16.00 + vat). I sourced a case of 36 from Coralgragh for £28.99 & free delivery a few months ago, but now their prices have gone totally crazy. Any recommendations, especially if they're based in N. Ireland. What should I be looking for in the type of mugs?