Groupon is doing a sitewide deal of up to 30$ off
Their discounts are set per the item you are getting, so best to add to cart then enter in promo code save30 and check if the discount is worth it for you as these range from 5% discount to 30% (maximum discount $40) per transaction.
Can be used multiple times.
You will see a banner at the top of the main website
Discounts per deal range from 5% to 30% off. Mystery discount code sale is valid until midnight, 07/10/19. Unlimited redemptions per customer (across separate transactions). Maximum discount of $40. Other exclusions apply: check deal page Fine Print before purchasing. Excludes the following deal: