nice game.
one tip with idle games:
if prizes jump up a lot between upgrades, then basically there are usually only 1 or 2 upgrade that are still cheap and the rest is super high above.
so at that moment there isnt really a choice. you have to take the cheapest upgrade for max progress.
so upgrading to max in 100 steps leaves more choice for the player than if the max is reached in 10 steps. let alone 3 steps, for maxing an upgrade. that makes it so there really isnt a choice. you just take the cheapest.
the more steps , the more unbalanced a player can be and so have their 'own build'
good luck. nice one