Card There are two chairs... in Hamster Kombat - Up to which lvl is it profitable to level up?

There are two chairs...

Card tab Specials

Upgrade cost up to LvL 16 70,309,633

Income per hour at LvL 16 55,740 per hour

Payback at LvL 16 52.6 days

How to unlock the card There are two chairs...

To unlock the card There are two chairs..., you need to invite 1 friend to the game using your referral link.

Card Upgrade Table: There are two chairs...

The table provides data on upgrade costs for the card There are two chairs... from the category Specials at each level, hourly income, and payback period.

LvL	Upgrade Cost	Hourly Income	Payback (hours/days)
1	50000	2000	25 hours / 1 days
2	55125	2140	26 hours / 1.1 days
3	63814	2290	28 hours / 1.2 days
4	77566	2450	32 hours / 1.3 days
5	98997	2620	38 hours / 1.6 days
6	132665	2800	47 hours / 2 days
7	186673	3000	62 hours / 2.6 days
8	275801	3210	86 hours / 3.6 days
9	427858	3430	125 hours / 5.2 days
10	696935	3670	190 hours / 7.9 days
11	1191995	3930	303 hours / 12.6 days
12	2140652	4210	508 hours / 21.2 days
13	4036518	4500	897 hours / 37.4 days
14	7992030	4820	1658 hours / 69.1 days
15	16614856	5150	3226 hours / 134.4 days
16	36268148	5520	6570 hours / 273.8 days
17	-	-	-
18	-	-	-
19	-	-	-
20	-	-	-
21	-	-	-