You can buy the standard tado° kit for just £199, with an installation cost of £50.
If you prefer, you can rent the standard tado° kit for £59.88 per year (equivalent to only £4.99 per month). There is an installation cost of £90. Your rental agreement is for 12 months - see the full tado° terms and conditions for details.
tado° also offer a 30-day money back guarantee for your peace of mind.