Blossman Propane Gas and Appliance

My Whirlpool Duet Gas Dryer would not heat up (dry clothes). Called a normal appliance repair service, but they did not work on gas appliances. They referred me to Blossman. Called the service manager at Blossman, he told me that he had a cancellation and would be able to send a repair person right over. He told me there would be a service charge of $89.50. That sounded reasonable to me and since I was taveling on business, I had to have the dryer repaired. I agreed to the charge. Sevice technicians (2) arrived when they said they would and went right to work. They diagnosed problem as a bad coil and told the person that was at the house overseeing the work that a new coil would need to be ordered and would take a couple of days to arrive. The part was ordered and came in 2 days later. An appointment was made with the person I asked to oversee the repair, the technician for Blossman came and installed the coil. The final bill was $268.86. That means the part with tax was about $179.36. When I arrived home, I was very surprised at the cost of the part. I found the replacment parts online for less than $50.00. So, it is apparent that the part was marked up a lot. I agreed to the service charge and would have not minded if the part (coil) was marked-up about 20 or 30%, but apparently the mark-up was apparently around 70%. I find that excessive.