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Library Upgrades
| Level bfmhfansite.com | Cost | Bonus |
|---|
1
| 300
300
120
| 2
|
2
| 600
600
240
| 3
|
3
| 900
900
360
| 4
|
4
| 1,400
1,400
500
| 5
|
5
| 3,400
3,400
1,400
| 6
|
6
| 6,800
6,800
2,700
| 7
|
7
| ?
?
?
| 8
|
8
| 27,000
27,000
10,800
| 9
|
9
| ?
?
?
| ?
|
10
| ?
?
?
| ?
|
