Are your prices low? Well consider this.......I live in THE most impoverished city in the USA. When I detailed for a living I charged $35-$75 for a simple car wash, interior vac, wipedown of dash & door sills, exterior glass, aerosol tire dressing, and spray wax. $35 would be for a Civic/Corolla, $75 for a Suburban/Navigator. One hour small car, two to two.five large. Extra services cost more.
Of course full polishing and other professional services were offered also and I stayed booked.
Word of mouth was my only advertising but I got in with a group of teachers, professors, and realtors. They needed top work done quickly and reasonably. I was never wanting for work.
Are you charging too little? YES, without question. Mind you people here do this same work for $10-$15......Mexico is just the other side of town! I had to cut my prices by 50% from when living in affluent Austin but still made a living. Charge more, get more efficient, and seek professional clientele. Work smart.