In reply to BnB:
I don't think I've ever paid much more than a tenner for a t-shirt - obviously its easy to find them that cost much more but it's hardly difficult to never spend much more than a fiver on t-shirts.
Nevertheless this "who buys this stuff?" question always comes up here which I find odd. The answer is clearly people with more disposable income than the questioner (or me)! I just bought a bottle of single Islay malt (Tesco own-brand admittedly, but jolly nice it is too). Some people are quite happy with own-brand blended and think spending that much more is silly, but for me it's worth it.