I love buying raw cashews in the bulk section of my grocery store. Most natural food stores have them, as well as Whole Foods. If you can't find them near you, then you can order cashews in bulk online. Buying in bulk is the most cost effective. Make sure to buy sustainably and ethically sourced cashews, as they sometimes use poorly paid workers from poorer countries who work in terrible conditions. Here is a great ethically sourced brand of cashew.