I think that the drive-thru mentality of many require that instant gratification.... they got a few buckets at home for the EOTWAWKI. They never lived off the buckets, or planted any seeds that they've 'vaulted'. Capitalism at its finest!
If on clearance, sale,..... then enjoy the bucket, even just for curiosity or entertainment purposes.
I too recommend 'smart shopping' and buying some empty food storage buckets....
Wholesale club, supermarket, and department store products can be had for a lot less than ALL those survival food bucket companies. Local farm stores and co-ops even less.
A 2-day 4 person kit are 24 meal... but we can do it on 2 meals a day for 16 slightly bigger meals over that 2 days. For us here, that would be 8 vitamins, and either some canned soup/raviolis, beans/rice, spaghetti, or using up the 'just add water' bread/pancake/waffle mix, or a box of granola bars, or those generic Great Value Bars from walmart for 78 cents, or the $50 candy bar fund raising box from the local club. We have plenty of water and fuel to last a month if need be. 2-days for the family ..... a bunch of candy bars would be enough with the generic One-a-day or Centrum.
My boat and camper has those 3600 calorie bars from various brands. A bar-pack of Datrex, SOS, Mayday, ER... 3600 calorie bar will keep you alive and well for 2-3 days but are grossly expensive. They serve a purpose... provide calories, take up no room, and easy to carry if need be. But, if you require a full belly, then you better wash down a single serving of the survival bar with a quart of water.