Genuine English Gold Stars trading between roughly $700 and $1,100 raw as of late June: the Regi trio from Legend Maker (Regice at about $700 is the cheapest Gold Star, period), Celebi from Crystal Guardians, the Power Keepers Eeveelutions (Flareon around $776, Jolteon $860, Vaporeon $1,085, a fraction of their POP 5 cousins), and the legendary beasts Entei, Raikou, and Suicune
You can probably consider yourself to have overtaken Keep Faith in a value-cost ratio once you add your fifth or sixth Bless to the bag with Token of Faith, but this takes multiple rounds and you have to jump through so many hoops to make all those Curses show up often enough that it is just much simpler to take Keep Faith and use your accessory slot for something less conditional that won't just be committed to a skill test when you draw it past the third round
Appletun didn't, but again, just a technicality
Plus, no hidden fees
Boasting some of the highest ATK values among all Synchro Monsters, Team Ragnaroks ace monsters from Yu-Gi-Oh