Not trying to be rude man but is this a serious question? Please Google it and you'll get your answers on prices, and also they are listed at Target, Walmart, TRU, etc...
I'm confused on what you are asking here. If you're asking about the price of Kre-Os, you can check them out at the TFW Resources: Transformers Kre-O Toys - Kre-O & Built to Rule - TFW2005