I personally didn’t use a grow kit yet, because I cultivate them myself.
I think if you buy them once in a while it’s a neat little hobby and a lot of fun.

I’ve had a lot of frustration in the beginning until I had a clue what I did (sometimes, even today I don’t know what I do!).
If you want to skip all the pain and let pros do the hard work you get rewarded with fantastic mushrooms.

Getting a pre-made grow bag that you only have to slice up is great, do that if you want to try it out.

If you find it a rewarding hobby, consider doing the work yourself and enjoy super rare mushrooms for ~2€ a bag. The only expensive investment you’ll need is a pressure cooker. The rest is super cheap and freely available.

You can also skip the sterile work environment and buy some grain spawn, and put that into reusable plastic buckets. Bucket tek is a valid method for sturdy strains, like oysters.

You don’t need much expensive equipment. I spent like 25 bucks for my first grow setup, which consisted of a heavy duty shelf, a plastic bag and spray bottle.
I upgraded it later with a terrarium fogger, and even later a humidity trigger and an old PC fan.
Looks like shit, but works and is cheap.

(Btw, if you’re german, check out !Pilzzucht@feddit.de)

Here’s a small picture gallery of my setup: