The cheapest pair of non-flip flip shoes that I've ever bought:
These were £3.00 from Primark.
I've already worn them with tights and shorts and they look quite cute. Nice to get my feet out of boots for once. They also had them in a coraly colour, lighter blue, black and black with white polka dots (just in case you were wondering). Whilst in Primark I also picked up some PJ bottoms reduced to £2! Shoes and PJs for a fiver, can't get better than that :)