UNIT COST (BASIC)

When designing new units, bear in mind that units strong in three areas (weapon, armor, chassis) will be vastly more expensive than units strong in only one or two areas.

For example, a 4-3-2 unit normally costs 70 Minerals to build, whereas a 4-1-2 unit costs only 30 and a 4-3-1 unit costs 40. So you can have two units for the price of one, not to mention the +25% base-attack bonus which the 4-3-1 infantry unit will receive.