>>513172594"Cheap" is proportional to wages.
Something can cost less, yet become unaffordable due to low wages.
Wages go up naturally when the proportion of demand for labor vs supply of labor is higher.
Demand for labor increases when there are more jobs.
Supply of labor increases with immigration or population growth.
Jobs increase when businesses are started or expand.
Businesses are started or expand when there is increased demand for goods and services.
Demand for goods and services increase when there are higher wages in proportion to prices.
Prices go up when there is higher demand in proportion to supply.
Supply goes up when goods and services are produced.
Goods and services are produced by businesses which pay wages.
Therefore, increasing the production of goods and services by free people in your country increases the supply of locally made goods, which are produced by local laborers, who are paid more when local business is prosperous, who can afford more locally produced goods, which increases demand for locally produced goods, which increases local business, which increases demand for local labor, which increases local jobs, which increases local labor.
In contrast, foreign or slave production lowers prices, which increases demand, which increases foreign or slave business, which does not increase local wages, instead driving either foreign wages or the price of slaves. As a result, the free local people experience lower wages, which decreases demand, which motivates companies to produce less. Prices remain stable or increase, while wages decrease as wages go toward buying foreign or slave products.