NX Cash is the online currency used in various Nexon games in exchange for extras. NX Cash is not refundable, and has no value except in the online games after purchase. In the exchange, $1 is worth 1000 NX Cash points.
Anthony quit his Maple Story account, and wished to refund his remaining 48,000 NX Cash points that he did not spend. However, the points had no value in the real world.
Prices shown in USD.