I am pricing them at $15 including shipping each and will do custom orders within my ability.
They fit a wide range of bits and all you have to do is pop them in the microwave for about a minute and they stay warm for about an hour. (i am going to time it).
They are filled with split peas that never go bad unless they get wet (so make sure you don't get your bit warmer soaked!)
I have a warmer I made myself five years ago that is still working just fine!
I can get almost any color fabric so if you have any requests I can do that as well.
To order please PM or email me at email@example.com
Make sure you tell me your Name, Address and What color you would like!
Here are some Photos of the ones I have made so far.