Don't have a CC linked to your account, or do not buy PSN cards. Personally, I've spent around 17 pounds on Gold packs, and I do not feel bad about it, as it didn't affect, my point is if you can afford putting 30+ pounds on a game then do it if it makes you feel good. Trust me, a money you enjoyed wasting is not a waste.
Or maybe you can check this :carling:
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