My best money saving rather than cheap (though it saves in the long run) is buy a bottle of Aveda Shampure . DH and I find a bottle lasts us a year ( one litre)
My DD buys a million bottles of Aussie and my bathroom is full of bottles in various states of use.
Sleek Cosmetics - I have 2 pallettes (eyes- 10 or 12 xcolours in each IIRC) and 2 lip (4 colours in each) and a blusher. Good quality, bargain price , (blighter to open though)
Drink water. Lots.
Muslin cloth and a creamy cleanser ( Superdrugs or Good Things Manuka honey) you can remove your eye make-up, cleanse and it exfoliates at the same time.
My brand new love (£12) Body Shop Vit E Aqua Sorbet. Lovely