Automatic Rain

I requested a evaluation of my sprinkler system and rerouting if necessary. What was recommended was the installation of toro precision heads to deal with the slope of my yard. The two man crew was an 1 1/2 late and unscrewed the existing 12 heads and screwed in new toro heads about 1/2 hour work and charged me $550.00. Online the heads are available for under $3.00. I wrote a letter to the owner W C Aldridge, the owner, expressing what I felt was an overcharge for services, but have had no response.