Barry M is quite good, they have a good range of colours (usually bright ones) and it's not too expensive. They sell it in most branches of superdrug I think and maybe boots.eyeshadows and glitter are about �5. A bit more pricey is urban decay not sure if they do bright pink though.
Right all of those others actually cost over �2! now if your a student which im guessing you are! you want to get yourself into H+M where its only �1.50 for bright pink! ok, good luck!