I've bought an ELF lipliner and SPF Lip gloss that were around £3 and £7 each. I was paying almost £30 for Bobbi Brown.
LOreal Panorama mascara instead of Lancome Hypnose (£12.99 v £29.)
Revlon eyeshadow palette £9.
I'm on the look out for a pale blusher to replace/ alternate with Nars and stumbled across Collection for £3. Not bought yet but the colours look good.
I am not negotiable on foundation and still buy Bobbi Brown (with a discount) full price £43.