Sorry but that sounds like you would not lower yourself to attend the beauty bash because only "high end" is good enough for you. Some of us are looking forward to a nice day out. I can afford to buy high end if I want to, but with 2 children I can 't bring myself to waste such a lot of money on so little. John Lewis is one of my favourite stores and we have one locally, plus Harvey Nichols and the like. I can hop on the bus any time. But the Q beauty bash is a bit different, I am going with an open mind and don't consider that I have wasted my £37 train fare.
For me, it's a rare day out, that I think I might enjoy. If you are offered the chance to attend and decline, that's a matter for you, but to sneer at it because it isn't high end enough is insulting to those of us who it is good enough for.