How much is a set of vouchers for the mouse constellation in the food station?

Two vouchers. "Food vs. Mice" needs one card to grade 9, two vouchers, 80,000 gold coins, a success rate of 30%, and 500 vouchers for insurance. Food vs. Mice is a casual game of strategy, which belongs to tower defense game with puzzle strategy as the main strategy. Greedy mice come to plunder food in droves, and the only defense way is to cultivate food to fight back.