For those of you who are poor, or finding calorie dense prepping food difficult to get, consider this. Cracked corn and oats are easy to get at livestock feed stores or tractor supply. 10$ for 50lbs. Sometimes they have barley and wheat as well. With a cheap grinder (less than 50$ on Amazon or ebay) you can make flour even. These staple foods can fit 4 bags (200lbs) into a 30 gallon galvanized steel trash can (make sure to use a heavy duty rubber bungee to secure it from raccoons). You can plant whole oats, wheat, and barley, and heirloom corn is easy to find for planting. Most would ignore it thinking it's an overgrown yard.
Most importantly, for 75$ you get 6 months of food for 1 person and a proper, safe way to store it. If things get better and you don't need to eat it, then mix it with layer feed and feed it to some chickens and turn that investment into meat and eggs. There's zero downsides. Add in a 15$ heirloom seed vault pack for variety and you will eat really well.
Think outside the box. Also as a footnote, farmers and small scale homesteads buy 100 to 500 lbs of oats/corn/barley all the time and it's normal. Try to buy several hundred pounds of Quaker oats and cornmeal from your grocery store and you'll need to make 10 trips.