Here's word from Jason at Chowren Toys about this month's promo exclusively for Brickset readers:
For this month we are making available 30522 Batman in the Phantom Zone set for $2.99 each. All readers need to do is enter promo code: BRICKSET30522 at the checkout to get the discounted price.
There are total of 1000 units available and are limited to 50 per customer while supplies last.
This promotion will only last until August 9, 2018 11:59pm (US West Coast time)