you can sometimes find bulk items your family likes becoming far cheaper if you purchase a very large bag -- e.g., one hundred pound bag of white rice is much cheaper per serving than 50 of the two-pound bags at the grocery store.
Good idea if you can get to it all before it spoils.
White rice has a shelf life of 30 years - granted, most Americans don't eat very much white rice, but in Asia, I read somewhere that individuals consume around 400 pounds per year.
If you eat rice daily, a hundred pound bag isn't going to last long enough to spoil, LOL