I don't market. I have a black truck and trailer. Usually, it starts off with them saying how nice my stuff looks. I either inform them I detail or they ask if I can make their stuff look like mine. Most is word of mouth. Depending on severity of the job, I get between $60 (regular maintenance wash/wax, no interior) to $480 (complete stripped interior, shampoo, undercarriage, engine, etc). Paramount is keeping stuff clean, whether washing before heading out or end of day. The paint on my truck. Notice, this is at night. The '98 Saturn, behind me, has paint just as clear. Getting home and cleaning up before putting away, at 8:30pm.