It's surprisingly easy with just a little money.
You posted a good, helpful constructive response.
This is what sharing thoughts and experiences on these threads is all about.
Just saw a 50 pound bag of rice at Sam's Club for less than $18. A big 7 pound #10 can of Showboat Pork and Beans is $3.78. A #10 can of Tomato Sauce is still only $2.67. Tins of Vienna Sausage are still only 50 cents in most local stores. All of these products can last in storage for years.
In my area someone usually has pasta on sale every week They are buy-one-get-one so it comes out to about 70 cents a pound.
We have had two occasions where popular selling, national brand pasta we brought home developed weevils. They spread fast and are tough to get rid of. So it is advisable to put pasta in the freezer for a while if you are going to keep it for any length of time. Freefing kills the eggs (if any) before they can hatch. We like to freeze it for at least 10 days.
Your comments on water point out the most obvious, least expensive and one of the most important steps any prepper should take. Without water in an emergency you won't live long enough for food to become a problem.
Thanks for the kind words and for mentioning an excellent point that I omitted. I freeze all starches (flour, rice, pasta, mashed potatoes, grits, etc.) for a week, based on hints I've read here. So far I haven't had any bug problems with prepper food, and I credit freezing the food with preventing those problems. As you said: This is what sharing thoughts and experiences on these threads is all about.