Don't forget about Goodwill and thrift stores for deals too. Remember to check expiration dates, keep them written on a card in an outer pocket (maybe why those packs were 19cents) Sure things a good a little past the date but trust me, things stop working as well past the expiration date (this goes for anything- nothing worse than an MRE gone bad, I know) Also, try cooking with that canned heat, so you know what its capable of.