Service center

Upgrade costs L0 -> L1
Product	Quantity	Market price	Total costs
Coins	2 000 000 000	1	2 000 000 000
Silver	50 000	1 603	80 167 500
Copper	15 000	86 680	1 300 200 000
Batteries	20 000	208 858	4 177 160 000
			7 557 527 500