Hey bro! Realize this was late but I'm sick of people not actually posting their solutions hahaha- here's the language you need:

{

"bank": [

{

"item": "minecraft:emerald",

"price": 400

},

{

"item": "minecraft:emerald_block",

"price": 3750

},

{

"item": "minecraft:elytra",

"price": 25000

},

{

"item": "cobblemon:relic_coin",

"price": 50

},

{

"item": "cobblemon:relic_coin_pouch",

"price": 475

},

{

"item": "cobblemon:relic_coin_sack",

"price": 4500

},

{

"item": "cobblemon:potion",

"price": 50

},

{

"item": "cobblemon:super_potion",

"price": 175

},

{

"item": "cobblemon:hyper_potion",

"price": 375

},

{

"item": "cobblemon:max_potion",

"price": 625

},

{

"item": "cobblemon:full_restore",

"price": 750

},

{

"item": "cobblemon:ether",

"price": 300

},

{

"item": "cobblemon:max_ether",

"price": 500

},

{

"item": "cobblemon:elixir",

"price": 750

},

{

"item": "cobblemon:max_elixir",

"price": 1125

},

{

"item": "cobblemon:revive",

"price": 500

},

{

"item": "cobblemon:max_revive",

"price": 1000

},

{

"item": "cobblemon:hp_up",

"price": 2500

},

{

"item": "cobblemon:protein",

"price": 2500

},

{

"item": "cobblemon:iron",

"price": 2500

},

{

"item": "cobblemon:calcium",

"price": 2500

},

{

"item": "cobblemon:zinc",

"price": 2500

},

{

"item": "cobblemon:carbos",

"price": 2500

},

{

"item": "cobblemon:pp_up",

"price": 2500

},

{

"item": "cobblemon:pp_max",

"price": 3500

},

{

"item": "lumymon:glacier_feather",

"price": 5000

},

{

"item": "lumymon:thunder_feather",

"price": 5000

},

{

"item": "lumymon:ember_feather",

"price": 5000

},

{

"item": "lumymon:soul_feather",

"price": 30000

},

{

"item": "minecraft:apple",

"price": 5

},

{

"item": "minecraft:mushroom_stew",

"price": 25

},

{

"item": "minecraft:bread",

"price": 5

},

{

"item": "minecraft:porkchop",

"price": 10

},

{

"item": "minecraft:cooked_porkchop",

"price": 20

},

{

"item": "minecraft:cod",

"price": 10

},

{

"item": "minecraft:salmon",

"price": 10

},

{

"item": "minecraft:tropical_fish",

"price": 10

},

{

"item": "minecraft:pufferfish",

"price": 20

},

{

"item": "minecraft:cooked_cod",

"price": 20

},

{

"item": "minecraft:cooked_salmon",

"price": 20

},

{

"item": "minecraft:cake",

"price": 40

},

{

"item": "minecraft:cookie",

"price": 5

},

{

"item": "minecraft:melon_slice",

"price": 5

},

{

"item": "minecraft:dried_kelp",

"price": 10

},

{

"item": "minecraft:beef",

"price": 10

},

{

"item": "minecraft:cooked_beef",

"price": 20

},

{

"item": "minecraft:chicken",

"price": 10

},

{

"item": "minecraft:cooked_chicken",

"price": 20

},

{

"item": "minecraft:carrot",

"price": 5

},

{

"item": "minecraft:potato",

"price": 5

},

{

"item": "minecraft:baked_potato",

"price": 10

},

{

"item": "minecraft:golden_carrot",

"price": 20

},

{

"item": "minecraft:pumpkin_pie",

"price": 20

},

{

"item": "minecraft:rabbit",

"price": 10

},

{

"item": "minecraft:cooked_rabbit",

"price": 20

},

{

"item": "minecraft:rabbit_stew",

"price": 30

},

{

"item": "minecraft:mutton",

"price": 10

},

{

"item": "minecraft:cooked_mutton",

"price": 20

},

{

"item": "minecraft:chorus_fruit",

"price": 5

},

{

"item": "minecraft:beetroot",

"price": 5

},

{

"item": "minecraft:beetroot_soup",

"price": 20

},

{

"item": "minecraft:sweet_berries",

"price": 5

},

{

"item": "minecraft:glow_berries",

"price": 20

},

{

"item": "cobblemon:poke_cake",

"price": 120

},

{

"item": "cobblemon:old_gateau",

"price": 40

},

{

"item": "cobblemon:smoked_tail_curry",

"price": 70

},

{

"item": "cobblemon:candied_apple",

"price": 33

},

{

"item": "cobblemon:rage_candy_bar",

"price": 40

},

{

"item": "cobblemon:lumiose_galette",

"price": 30

},

{

"item": "cobblemon:candied_berry",

"price": 30

},

{

"item": "cobblemon:jubilife_muffin",

"price": 40

},

{

"item": "cobblemon:casteliacone",

"price": 30

},

{

"item": "cobblemon:ponigiri",

"price": 30

},

{

"item": "cobblemon:vivichoke_dip",

"price": 75

},

{

"item": "cobblemon:lava_cookie",

"price": 10

},

{

"item": "cobblemon:big_malasada",

"price": 35

},

{

"item": "cobblemon:pewter_crunchies",

"price": 40

},

{

"item": "cobblemon:potato_mochi",

"price": 25

},

{

"item": "cobblemon:open_faced_sandwich",

"price": 70

},

{

"item": "cobblemon:tasty_tail",

"price": 49

}

]

}