Sure, it costs more but worth it IMO. It comes in bulk at a cheaper price so 1 order from Amazon normally lasts 2 months or so.
As for the food, I've saved hundreds on food by growing my own.
There's nothing wrong with growing your own food, but you're going to waste a lot of money if you only buy food that has a natural or organic label on it.
It's smart to be concerned about what you're buying and you want to be healthy, but a lot of that stuff is marketed to people with the same mindset as you to make more money.
Not all research was from like-minded people.
The articles you've posted and most of the things you've said to search for all turn up to be anti-gmo websites. There are a lot of unbiased articles detailing the upsides and downsides to gmos, and I could pull a couple up if you want.