Product review (5 stars): Exceeded my expectation
My Amana dryer quit heating up.  My thought was "geez, it would cost me a least $600 to replace it or $300 to get professional help".  A few years ago when my refrigerator quit working one day.  I called a local service.  They came and it took them about 5 minutes to diagnose and another 5 minutes to replace a part.  The quick repair cost me $300. I felt like an idiot.  Learned my lesson on giving up too quickly.  This time I decided to give it a DYI try even though I knew nothing about washer/dryer.  I found the similar model's diagram online, learned about how it works, a few troubleshooting tips.  Learned about the ohm outputs and possible issues.  It came down to the gas valve coils.  I found these Kenmore Gas Valve Coil kit on Amazon and ventured to order them.  I thought "What do you have to lose but 10 bucks". The parts arrived so quick (kudo to APPLIANCE PARTS STOP!).  Installed them and the dryer was back working since. Thanks to Amazon and aftermarket sellers like these, so I was able to save a few bucks for my family. Wonderful experience!