YMMV, I received an email from Best Buy with a $5 welcome back code. Use it online with code and pin or use it instore. Subject Line: "EXCLUSIVE FOR YOU: $5 Welcome Back Gift".
$5 SAVINGS CODE OFFER:
CODE MUST BE REDEEMED BY 6/22/18. Present this Code to the cashier at the time of purchase and the available balance will be applied toward your purchase. To redeem at BestBuy.com® enter the 16-digit code and PIN located above at checkout. Redeemable in any U.S. Best Buy retail location or online at BestBuy.com where available for merchandise or services, excluding Marketplace items, Magnolia Home Theater® and Pacific Sales/Kitchen & Home. Code carries no service or administrative fees.
Attached is a screenshot.