I haven't seen any vendors announce or advertise anything. Anyone know of any sales that are going on over Memorial Day?

 

Updating to say that I see SBG has since announced one.

 

Advance Auto Parts has SPMEM18 coupon code for 20% off ordering online. You can order online for in-store pickup and they typically have the NGK plugs in stock. Order the plugs online with the coupon, go pick up in the store, no shipping and a nice discount.

Dale