I think that some of the jobs are buggy, after I upgraded the Artist job, the time block price dropped from 20 to 1 (also I think the earning and the time may are false since it's 60 000 for 1sec with roughly a 8x multiplier plus a 8x tome boost, which is a huge ammount of money for a short time)
btw the game is awesome so keep it up! ;)
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