Let me tell you from personnal experience: Don't waste money on flyers.
In the past for my Poker Club, I have done 3 different flyer distribution. Each was 2000 flyers. First one was for a Texas Hold'em training I was giving, second was for a special tournament we held and last one was a general invitation to become members.
First one I did using black and white photocopies on a nice yellow paper. Cost me 10 cents per flyer and they looked pretty good. I did the distribution myself. So that was 200$ Worth plus about 8 hours of my time designing and having them printed plus around 8 hours to distribute them door to door. Total return on investment: 0$. Not a single person came to the training because of the flyer.
Second time around I used a color flyer I printed on my Color Laser Printer and then had them folded at Stapples. Cost for that was about 30 cents per flyer. So came to about 600$ plus the same 8 hours (roughly) for design and print and an other 8 hours to distribute. Result: Again, not a single person came to the tournament because of the flyer.
Finally my last shot I used a professionnal graphic designer to produce a 2 side half page flyer printed on thin cardboard. It looked fabulous and I paid to have in included in a publicity distribution run. Cost of all that was over a 1000$. Result, I think you know where I am going: Not a single person again.
So save your money, people take these things and throw them directly in the trash without even looking at them. And that was poker which has 1 in 8 person (roughly) interested. Now imagine for car detailing, we can't touch much more than 1% of the population...
Instead of spending a fortune and ton of time on flyers, I would offer free détails with an agreement person would promote you. For 1000$ Worth of work you are bound to get a few clients. You could also get people to sell your service for you and offer them a cashback. Places like car dealerships, garages, body shops.
I intend to try to build a network when I start in a few days. I will offer cash back for referals that get work done. And I will ask the same if I send them clients. For exemple with a body shop you can send them clients that have issues you can't fix and need a repaint. They can refer clients to you that just had their cars repainted and will need to protect the new paint after a month or so. You can both cross sell and make a bit extra money.
