Dokapon Kingdom - Athenaeum

Level	Upgrade Cost	Total Upgrade Cost	Income	Worth
1	N/A	N/A	30/day	260,000
2	960	960	53/day	260,000
3	1696	2565	92/day	520,000
4	2944	4509	161/day	520,000
5	5152	9661	281/day	520,000
6	8992	18653	492/day	780,000