Will the pops and RGOs be price and wage sensitive?
Will there be the ability to offer more money to succeed in purchasing short supply items?
What exactly you mean by that? Yes, POPs will migrate to get better paying jobs on more profitabel RGO, but since there will be (ever stricter) limit on the max number of them on each RGO, they will often have no choice.
The only changes in RGO types are discovery of oil, gold and rubber plantations and at least two of them are limited by the presence of that raw material.