32-Pack RoomMates Peel & Stick Wall and Backsplash Tiles: Black & White Diamond/ Wood Chevron (10.5″ x 10.5″) – $19 shipped

MorningSave has 32-Pack RoomMates Peel & Stick Wall and Backsplash Tiles – $19 shipped when you enter code 10FS at checkout, which works out to $0.59 per tile.
Available in 2 patterns: Wood Chevron & Black and White Diamond
Reference pricing:
Black & White Diamond is $75.84 (for 8 4-packs) on Amazon ( link )
Wood Chevron is $84.64 (for 8 4-packs) on Amazon ( link )