dont worry, after they hire the $25/hr guy to do it for them they will pay you $85/hr to fix it later

when I was contracting I would handle it two ways, flat rate them or figure out what the rate they wanted to pay and set hours of effort accordingly.

__________________

1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)