The Marketplace (as of Version 1.16.15) holds the same 22 items that be bought once per day. Every 24 hours every item in the Marketplace refreshes.
Items sold in the Marketplace sell a fixed amount at the fixed price every day. It sells many of the consumables needed to upgrade heroes, and also summoning scrolls to be used in the Summon Circle.
|Item||Quantity||Price max. ()||Price ()|
|Hero Promotion Stone||500||1,000,000||150|
|Super Wishing Coin||2||-||500|
|Basic Summon Scroll||1||-||10|
|Heroic Summon Scroll||1||-||150|
|3★ Random Hero Shard||20||-||50|
|4★ Abyss Hero Shard||30||-||300|
|4★ Fortress Hero Shard||30||-||300|
|4★ Shadow Hero Shard||30||-||300|
|4★ Forest Hero Shard||30||-||300|
It's never recommended to buy items like Spirit, Magic Dust or Hero Promotion Stones using Gems, because they're way too expensive. Prophet Orbs should only be bought if you're an owner of a Monthly Card to counteract the high costs. Since Gold is quite a rare resource in late game Basic Summon Scrolls are not worth buying either.