Original sentence: These theorists valorize an economic theory in which, according to them, prices are determined in a free market: that is, by trades that occur as a result of voluntary agreement between buyers and sellers; where a market mentality and entrepreneurial spirit exists; and where specific, legally enforcable, notions of property and contract are instituted
Edited sentence: These theorists describe an economy in which prices are determined in a free market: that is, by trades that occur as a result of voluntary agreement between buyers and sellers; where a market mentality and entrepreneurial spirit exists; and where specific, legally enforcable, notions of property and contract are instituted