CoinCost specifies the base value of an item. In single zones mode, items cost their base coinCost. Since All Zones mode is longer, allowing you to get more gold, each zone has a multiplier for coinCost. The multipliers are as follows:
coinCost also determines blood shop prices. The ranges for All Zones Mode are as follows:
In contrast to coin shops, in Single Zones mode blood shop costs may be higher (at least 3 Hearts in some cases) since the player's starting health can be higher.