A friend has tier1 (3workers) to lvl8. started at 1day 100g, goes up by 1day 100g each lvl. lvl8 is 8days 800g.
tier2 (4workers) starts at 2days 400g, goes to 4days 600g.
only the first 3 leaders start with 3workers on tier1, the other leaders start at 4workers on tier1.