Materials

Investing materials gives additional levels to the service sector. This is very helpful to reach higher trophies. The additional levels do not increase the building cost, e.g. building boutique level 100 with a bonus of 30 costs as much as boutique 70 without any bonus.

Apart from the first two levels, four buildings have the same cost, while the Cafe has a different cost table.

Bonus level and cost as function of the level of material investment: