I bought "The Legend of Dark Witch 2" and got nothing. I did get the "Sign in to Nintendo eShop (weekly)" bonus so my accounts are linked, and the purchase did show up in my "my Nintendo" account under receipts.
Maybe the glitch just works on the Sega 3D Classics, I can't try since I already own them.
EDIT: Welp, refreshing didn't work, but going to the main My Nintendo page shows I got 10 stars, must be discounted stuff that use to be $5+.
The tier is specifically $5 to $9.99. $4.99 doesn't count. I upgraded a couple of SNES and N64 I hadn't paid for yet on Wii U and got points for them quickly.