The site is called Remarkably Unique and Special Bears and the artist is Dawn Solomon. Solomon calls her creations Memory Bears. The price is very reasonable (starting at $45) and she has shipped the finished bears to most states in the US and three other countries besides.
You can purchase a bear to mark an occasion other than death, but what's the fun in that?
Here are some of the bears Solomon has made for people taken from her Pinterest board.
Solomon also makes bunny rabbits.
This is one of those things to just keep in the back of your mind. Maybe you'll need it someday?