The Click and Grow is delivered as a full kit. The only two things not included are water and sunlight.
Water you can probably find. And now there is a super easy option for additional plant lighting too! If your newborn plant is 3 cm high and crawling towards the nearest window, desktop lamps with ANY ENERGY SAVING BULB will help.
A lamp will definitely help to improve germination and can speed up growth up to 8 times. If you live in areas with dark winters, this is a a option to consider.