11) Just £4.99!
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This pricing method of chopping the last penny off is so ubiquitous that I doubt most people even recognize it any more. Nothing is EVER £5 or £10 in a shop.
Stupid humans that we are, we naturally round down prices, so instead of saying “it’s a fiver” we go “oh, it’s four pound something.”
I like to think that my brain is a little more clued up than that, but the very fact that ALL the retailers do it on a global scale means there must be something to it, otherwise they would just stop doing it.