Upgrade revamp

[Red-Rocket]

The kerm cost needs a little bit of a change, early on you are STUCK when you dont get a lucky kerm astroid pick off because many upgrades only go so far as 1-2 then you hit the T1 wall

i suggest changing the kerm costs

Tier 1 - 10g to 0....or nothing
Tier 2 - 20g to 10g
Tier 3 - 30g should stay the same, they are T3 after all and it does take a while to get to the upgrade wall of T3

That way we wont be at a disadvantage at the first kerm spawn (because usually the enemy will already have T1 in effect at that point) T1 comes in pretty early compared to the others