The kits suck, buy a
pressure cooker
vermiculite
coco coir
large mouth quart jars
plastic tub or fishtank
and birdseed or organic rye berries
cost at the most 175 and it will be enough to keep it going for a very long time.
If you buy a kit you will spend 100 at least and it will only be good for one run. a wast of time and money