"To buy the kit" means purchasing a set of items or tools that are needed to complete a specific task or activity.
Sentences with «to buy the kit»
This is handy, perhaps, for miners who can buy kit with coin they have mined. (bit-media.org)
My mom never baked so we'd always buy the kit from the store and then tons of extra candy for decorations. (petiteallergytreats.com)
These oils are amazing and if you enroll with me you are not just buying a kit, but you are also gaining a community of awesome people! (planstoprosperus.com)