Found the following on their website under sales:

Marquardt switches are components of finished products and must be
replaced by the finished product manufacturer. If you are the owner of
a product for which you need a replacement switch, please contact the
manufacturer of your product directly. Neither Marquardt-nor our
distributors-can sell replacement switches directly to the end-product
owners.

That kind of puts a damper on things! Nice sealed switches though...

-Sandy