I gave it another try! (I saw the checkbox, but I couldn't find it; it was pretty well hidden, haha.) But the upgrades are still incredibly slow. The cheapest one costs 80 credits, and it's taking me forever to dig just to get one at a time. I feel like a better balance of some of the speeds or purchase factors would help. I do like the interface, though.
Thanks for trying it out. The cheapest upgrade costs 45 which is an energy upgrade, I am guessing you're referring to the laser damage upgrade? That is around 5-8 hauls (for the 80 one) so it does take you time indeed. That said, maybe a slight decrease of prices at the beginning to get a quick dopamine hit would be better than have it trickle slowly from the get go.