I think you're coming to this question from the view-point of your current budget, and I'm the same. I wouldn't spend my current food bill for a month on a face cream, just as I wouldn't buy a car for £35k even if I could meet the monthly payments because I can't justify it on my current budget.
BUT
If I won the lottery jackpot and had millions in the bank earning me more in a month than Mr Akimbo earns per annum then yes I know I'd try face stuff* like this just out of curiosity, plus I'd splash out on any car that took my fancy. I certainly would have "more money than sense". But phrases like this, criticising folk for their purchasing decisions, will only serve to deter them from posting on here their reviews of these products. I enjoy reading these even though I may not intend to buy them.
*I'd like to qualify this and say that if a product smells of fish or any other weird smell I'd give it a miss, I know some have mentioned that a Dr P product was a bit fishy. This applies in any price range - I love the smell of Liz Earle's C&P, and Brightening Treatment but Skin Repair make me gag.