If you are going to charge for the pictures you should post and make known you're pricing structure. Paying $45 for a session and $20.00 for pictures is quite affordable. Having to pay $600.00 for a full set, or $50.00 for 5 pictures on top of you're sitting fee may not seem "affordable" to some and if you didn't make known you're full pricing structure in advance it may feel like a bait and switch to a client. I am not saying those prices are not fair, I am saying make sure you're pricing structure is open and easily understood.

There is more to ones reputation than their work and perception is everything.