A To make money selling cars you have to know the value of cars. Knowing which cars people most want might help too, but any car will sell for some price, and you need to know that price. Drive around looking at cars for sale, or cars just sitting idle in people\'s yards. When you can easily look at a car and guess how much it will sell for, the rest is easy - just offer $1000 less. You\'ll eventually buy a car, and sell it for a profit. Then you can and repeat the process.