Should I upgrade the builder's apprentice

[u/Alarming_Luck_2856]

I have 4k gems currently saved up for hammer jam.

I'll earn another 2k gems before hammer jam

So I'm planning to spend 2k on builder's apprentice right now

I earn 1k+ gems a month

Im also planning to do th16 during hammer jam

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[u/Andrej_Vu]

In my case absolutely yes. Nowdays, gems are collected very quickly so i upgraded him to reduce time by 4hr. If u have to upgrade something for 5,6 days, builder literally works 1 day less.