Product review (5 stars): Amazon to the rescue!
I recently had a remediation company remove a warming drawer after a flood in my kitchen.  The drawer was stored for several months until repairs were complete but when it was brought back for installation, the knob was gone.  The restoration company called their suppliers looking for a replacement but couldn't find one so I turned to...AMAZON.  Of course Amazon had one in stock and I snapped it up.  It wasn't cheap but at least I have a knob now and don't have to use pliers to turn on the warming drawer.  Thanks Amazon!