Ah I see, thanks
I suppose it is just opinion on what is a balanced boost between the drills and the mines/collectors. My opinion was just based on the fact that maxed level (6 currently) drills cost 34 gems to boost for 1 day while a maxed mine or collector (lvl 11 current max) only costs 11 to boost for a day. Both opinions make sense I think so I think that we are both right!





