£ - cleansers, underwear, mascara, lip balm, moisturizer (facial oil and serum and essence), eyeliner, shampoo, conditioner, shower gel, t shirts, socks, brow powder, razors, deodorant,
££ (don't go for the cheapest but go for a mid range option usually korean brands for makeup )- spf, primer, bb cream, liquid blusher (daniel sandler), face powder, liese hair dye; exercise leggings, dresses (boden/seasalt/joules), M & S tights, jumpers
£££- backpack, foundation (ysl/suqqu) highlighter (charlotte tilbury), blusher (suqqu), eyeshadow (mac), urban decay setting spray, decent leather loafers, hermes perfume (tutti fruitti twilly), nars concealer, coat.
As a rule of thumb, it generally is better to pay more for base makeup/colour makeup as the colours are nicer but i find that expensive skincare is disappointing so I just make sure I wash my face and moisturize well. I also find clothes quite disappointing so revert to a basic uniform of floral dress paired with tights and jumper in autumn/winter. but i don't go too cheap as i find clothes in places like primark unwearable but I would buy second hand if I can (though I don't often find stuff I like second hand). I would pay for good shoes though.