Not a way to check. The way it works is she sets 'deals' with an agency, whereby is a model needs some portfolio shots, they will send the model to her website, they go to the prices page and enter in login credentials.

So the prices structure would be:

Login > [no login] = display <prices.htm>
Login > [agency A] = display <prices_agency1.htm>
Login > [agency B] = display <pirces_agency2.htm>