Found a pretty cool website called www.dekudeals.com that has price histories on the eshop. Looks like a lot of these games go on sale pretty frequently, so I don't really need to be in the hurry I thought I needed to be.
Switch Code: SW-7377-9189-3397 -- Nintendo Network ID: theRepublic -- Steam ID: theRepublic
Switch - Mario Kart 8 Deluxe (2014/2017)
Switch - Bastion (2011/2018)
Wii U - Darksiders: Warmastered Edition (2010/2017)
3DS - Pushmo (2011)
3DS - New Super Mario Bros. 2 (2012)
Mobile - The Simpson's Tapped Out and Yugioh Duel Links