It's in the weekly ad on page 8:
Get 30% off any PS4/XB1 game that's been released(except for FIFA18 which is excluded right in the ad verbiage
) by purchasing a $1 pre-order card.
This is the same promotion they have every month or two. It's decent enough as is, but if you can get them to price match to a lower price AND do the 30% off promotion it's even better. But it's highly YMMV as to whether or not they'll allow both.
Completely forgot to add this this morning, but this promotion also works on clearance titles.
Some of the current batch of clearance titles include:
Puyo Puyo Tetris(PS4/XB1)
Hitman Season 1(PS4)
WWE 2K17(XB1 version only for now)
And a bunch of others which are slipping my mind right now.