We’ve established that indoor growing will be pricier than doing so outdoors. But if you want some numbers, you’re looking at the €150–250 range (around $180–300 for our American friends out there). And, with legalization becoming a reality in many parts of the world, you can find many of these tools online. You don’t have to look any further than Amazon, which will give you a ton of options. As for the seeds, specialised sellers like Royal Queen Seeds will provide a list of high-quality options to choose from. We’ve got you covered.