This is apparently only for New Nintendo 3DS owners. Open up the eShop and in the search panel (top of the screen) just type in 51105102 and download the Sales app. Open up when downloaded and you have the following sales:-

15 January – 28 January
● Kid Icarus: Uprising (¥2,950)
● Super Mario 3D Land (¥2,960)
● The Legend of Zelda: Ocarina of Time 3D (¥2,960)
● Animal Crossing: New Leaf (¥2,960)
● A-Train 3D (¥3,430)
● Ace Attorney 123 (¥2,390)
● Hatsune Miku Project Mirai 2 (¥3,450)
● The Little Battlers Wars (¥3,070)
● Chibi Robo Live-Action! (¥920)
● Dillon’s Rolling Western Last Bouncer (¥1,230)
● Armed Blue Gunvolt (¥1,170)

29 January – 11 February
● The Legend of Zelda: Triforce of the Gods 2 (¥2,960)
● Kirby Triple Deluxe (¥2,960)
● Mario Kart 7 (¥2,960)
● Luigi Mansion 2 (¥2,960)
● Sengoku Musou Chronicle 2 (¥3,330)
● Super Robot Wars UX (¥4,400)
● Harvest Moon: Story of Seasons (¥3,110)
● Fantasy Life LINK! (¥3,070)
● Chibi Robo Live-Action! (¥920)
● Dillon’s Rolling Western Last Bouncer (¥1,230)
● Armed Blue Gunvolt (¥1,170)