Mayan crowns

The currency of the Mayan crown is currently only used to buy the artefacts of The Shop of Wonders in Delos. The only way to obtain the crowns are to buy credits from the official market to reach various milestones: one crown at the 100 credit mark; two each at the 300 and 500 marks; five more at the 1000 mark; and 10 more at 2000. The maximum amount of crowns one may accrue via this method is 20.