alright ummm lets see, you know what bulbs your gonna need and im sure those are easy to find. they have the plug-in socket adapters and the Y socket adapters near where the power strips are, kinda just random electrical stuff in that area. soil and perlite are obviously gonna be in the garden dep. the hygrometer will be near the fans and stuff i believe? you'll also need a fan if you dont have 1 already. so probably 20$ on lights 10$ on soil/perlite 5$hygrometer and for the socket adapters it will probably be about 3-4$ per pair, plus fan. hope that helps a little? lol