I do not own a pair of Gaynor Minden pointe shoes, but have to admit that the interest is huge. As we all know, they have their specific fitting system - and the whole Shoe is a unique design (material etc.). On the company's youtube-channel you'll find a series of videos introducing both shoe and fitting system. Some of the talk is clearly indicated to sales persons, but I found it all very informative as a possible customer.
Here's the introduction and first part of fitting (Getting started), below them links to the other 8 parts, a couple of minutes each. I recommend them all :)