The woman with the glasses is a specialist that is available only to those with a fetish to cum on the face of a girl wearing glasses, but it is only $40. If you want her to then do a clean up using hot mouth or to let you watch it drip off glasses onto cheeks that is an extra $20, so you are back up to the $60.
Fyi - if you go to 3rd floor they are running a special. Normally $150, but if you empty the pail for them after every 3rd customer for 1 day's shift you can have 2 girls for $10.