your maths seems weird to me. i would still need to spend 1,500,500 for 1 kp, out of interest how much gold would it take me to get to 1.5m per kp?500 on 50K is a 1% increase in costs. 500 on 1.5m is a 0.03% increase. That's not the same.
im pretty sure tech advances still require t1 resources to unlock dont they? i still need them in fairies.