First level upgrades state they'll give the second level upgrade
Lv 1 .1 -> .3, Lv 2 .3 -> .5
shows as
Lv 1 .1 -> .5, Lv 2 .3 -> .5
Something is going on with costs. Thinks say they cost more than they do after the first rebirth. Perhaps one of the rebirth upgrades are making the costs say they're higher than they actually are?