I got an email about this a little bit back and figured I'd share it, title basically covers the main details, the rest is below:
How to redeem your Coupon:
Shop for eligible items. (See below for exclusions).
Pay for your item by 7:00
PM Pacific Time on June 21, 2018
Enter the Coupon code in the redemption code field: PSUPERSUMMER
Eligible items
exclude warranties and protection plans, as well as items from the Video Game Consoles, Laptop & Netbooks, Coins & Paper Money, Gift Cards & Coupons, and Real Estate categories.
US, Canada, Latin America, and Caribbean only.
Direct link to coupon