Look at say a pair of jeans, yes you could make them yourself but really are you? So you pay for the convenience of going to the store and buying them right there. No different then buying a set of AN/GH food
It's very far from a pair of jeans mate, it's more like a lemonade.
Big Mike buys some Lemon Juice and Sugar, adds a lot of water, puts it in a plastic bottle with a label, and spends a lot on :
- advertisements
- packaging
- shipping
- storage
- licenses
- wages
- profit
- company upkeeping
- Big Mike's whores
- etc...
That's a lot of additional cost, while the product remains the same, no real value added, only the costs are more, and you have to pay that.
Storage and shipping cost are 90% more compared to fertilizer salts because the extra water, it weights more, takes more space etc, and these were the smallest extra expenses.
You can buy the same Lemon Juice and Sugar, or even organic lemons to make your own juice or whatever, and mix your own lemonade for the fraction of these costs.
This way you will know whats in it, and won't have to pay companies like AN to tell you lies about a product (this is what marketing is about)
You can buy the same (or better) fertilizer salts that AN, then you can make not just that product but almost any fertilizer solution from any company from these same salts.
Or you can make and fine tune your own unique profile, based on you own environments, just buy using different amounts from these same salts. Or you can buy premixed fert salts then just add water...
If someone can follow AN's feeding schedule (eg. add 4ml Bloom and 2ml Grow to a liter water) then he also can do the same with the fertilizer salts (eg. add 6g Calcium nitrate and 2.5g Universol Blue to 10 liters of water).
You don't have to be a chemist to do that, do you?
There would be only one reason to buy a ready made fertilizer solution: if there is some real research behind it but so far I haven't seen any.
For God's shake : the nutrient profile for cannabis (drug type) is still unknown, no real research has been made to find it, while these companies are making fortunes from selling nutrients said to be tailored for cannabis?