I can tell you if you're looking to make this a startup idea, its a shitty one. Bad Market, Hard problem.
With that said, I'd pay >$100 a year for it.
It might be harder in the US because of how much more competitive the grocery market is.
Recipes are just recipes on recipe web sites. NYT Cooking is a nice one. Food prep is just...making the recipes and putting the food in your fridge.
As far as easy meals literally hundreds of services exist for this. I recommend finding one that's local so that you aren't dealing with wasteful packaging and shipping. IMO the ones that fully prepare the meal are honestly better than ones that make you cook it.
Also restaurants exist and a lot of people literally just eat at restaurants/fast casual/fast food for every meal.
As a wise software developer once said... "Good, Cheap, Fast... you may only have two"
We collectively spend a lot of time and money on food, but the good news is that it's one of the joys of life.
Interesting little link: https://www.ers.usda.gov/amber-waves/2020/november/average-s...