vcmi/config/resources.json

{
	"wood": {
		"index" : 0,
		"price": 250
	},
	
	"mercury": {
		"index" : 1,
		"price": 500
	},
	
	"ore": {
		"index" : 2,
		"price": 250
	},
	
	"sulfur": {
		"index" : 3,
		"price": 500
	},
	
	"crystal": {
		"index" : 4,
		"price": 500
	},
	
	"gems": {
		"index" : 5,
		"price": 500
	},
	
	"gold": {
		"index" : 6,
		"price": 1
	}
}