Best Fix Aluminum Wiring in Phoenix AZ

I have mixed feelings about the service. The technician, Dwayne, was extremely professional. He was able to unclog the main line through the roof vent. He was here for two hours.The mixed feeling comes from the cost of the service. I recently bought the property and I am a first-time home owner. The toilet started overflowing at 4 am in the morning. The unit has a shared main line and the clog originated from another unit. We were able to bucket the water into the shower until the 8am appointment. We weren't sure what to do nor what the cost would be. It cost $917. After researching online, the average cost for cleaning the main line is between $350 and $600.He said the cost reflected the need to use two snakes, but the pictures provided only show one snake being used.We planned on using Parker and Sons for an AC replacement as the house's AC needs to be replaced. The customer service has been great, but something doesn't feel right about the cost for the main line cleaning.