^^Not everyone has your lifestyle there are people on this thread who are cleaners.
For what it's worth I think that the nice thing about this thread is that people haven't been at all prescriptive about what shops / labels make you look "expensive". If anything, it has been the opposite with the general consensus being that merely spending money without having style is the quickest route to looking a bit try-hard and cheap!
Personally I have been wearing some designer clothes and nice fabrics (eg cashmere) for the last fifteen years, and I have sometimes done it on an incredibly tight student / waitressing budget! You can often find cashmere and great coats etc in charity shops, which I think are a brilliant way to find nice clothes if you go to the right area (eg nice parts of London / the Home Counties / Harrogate etc), although you probably need to be a size 14 max for the best options. My best purchase ever was a cream vintage Dior coat for £30 from a charity shop 10 years ago! I still wear it (though it is slightly tighter on me now..)
When I started in my first low paid job in the charitable sector, I progressed from charity shops to eBay. You can find some lovely clothes and shoes on there, particularly if you look for good quality but not necessarily the most trendy designers and top high street shops. I still often do searches for Jaeger, Russell & Bromley etc. You're not going to pick up a Chanel bargain, but it is surprising how affordable some other items can be. There are amazing coats in good condition that would cost ten times that new. It's also a good place to go for scarves.
Of course there are people here without any spare cash at all, but I think there have also been great suggestions about how to make an outfit look nice with one great accessory (eg a good quality scarf).
If I'm on a tight budget then I never compromise on quality - it is just a matter of shopping in slightly different places or in a different way (for example buying great items on sale rather than wasting money by waiting until I need something and then panic buying)!