Can't buy "Little Green Men" even with more than enough resources.
I think it is because you have the cost for bolts and batteries as a level cost and they seem to be stored differently as the Currencies object has:
5: {shortName: "bolts", saveableState: {xp: 0, level: 0, highestLevelAttained: 0}}
6: {shortName: "batteries", saveableState: {xp: 0, level: 0, highestLevelAttained: 0}}