Haribo is known for their gummy candy, especially the bears. They are incredibly tasty, but watch out: eating too many will make you sick. Not only are these tasty, they can be used to build many interesting and cool-looking structures (like here), and they can be ingredients for even tastier DIY snacks or alcoholic drinks, as seen here.
How much do they cost? A bag of gummy bears costs about a dollar where I live, and at approximately 40 gummy bears per bag, a gummy bear costs $0,025. They are definitely worth the price.