Don't have time or room to mix and wait. I use
roots organics . I like it and it's convenient.
You can buy amended soil ready to go from kis organics or buildasoil. Like 25 bucks probably same price or cheaper.
Do you know why you like it?
I like Pepsi but that don't make it good!
Now there's nothing wrong with buying something you like, keep doing it. And I have no negativity towards you.
I just wanna give a different point of view.
Bat guano, greensand, soybean meal, perlite there's better options. In fact i only feel comfortable with the pumice on this list. I don't know anything about the other ingredients... like the castings, how old what percentage?...etc Maybe info on website i don't know.
There's a lot more I could write, but if you wanna learn why you might like or not then these are stepping stones. Any questions ask
If you don't care about any of this, that's fine too! Whatever you do is cool.