I don't know if you're in on the secret yet... but every two weeks we send out a private email to the most devoted crew of TechToolians... it includes exclusive content, free sound packs, sales and a special discounts (up to 50% off!). If you're keen, you can join the crew here (just one email every two weeks and no spam).
Sale discounts are applied automatically in the store. Discount codes are applied in the checkout after you have your cart ready to go and are ready to finalize the order. Make sure you copy it exactly as displayed since it is case sensitive, else it won't work. If you need anything else hit us up at support@djtechtools.com.