Hey Marsha
First a little disclaimer - while I really think that all of these are great ideas (and most are not my own)...I have yet to be able to apply them to myself

I just finished created more *complimentary* wedding invites - LOL!
I agree so much with what Vikki mentioned....ALOT of times - low prices are VERY closely associated with low quality. In the photography world...it is very well known that people seem to believe that by paying more - they get more quality - and obviously - that is very often true. They also seem to think that if prices are too "cheap" - then the quality is probably not the best. So, by simply having HIGH prices - the photographer prices herself (or himself) out of the range of those looking for "cheap" portraits and immediately sets herself up for a high-paying clientele. Also, many times, higher prices are associated with confidence - which you should have no problem with - I've seen your "stuff"

Gosh - I have no idea if I am explaining this well or not!
Anyway - with that said - I guess my best advice is to charge what you feel comfortable with. I PERSONALLY view any time spent away from my family, friends or other life/social obligations to be very precious, and therefore, very expensive - LOL! Meaning, it has to be worth my while.
One thing I do know is that by having SET (printed) prices - you will alleviate alot of the stress and awkardness associated with telling prospective clients (friends and family included) your pricing plans. You could always set your prices a little higher than you are even comfortable with (for strangers)...and then offer a friends/family discount of 25% or whatever you deem fair. That way - for strangers - you will get the price you need for your time/talent - but at the same time - will feel like you are doing your friends/family a favor - even while charging.
Also VERY MUCH agree with what others said about before long it will just become a JOB and will no longer feel like fun - especially if you get to the point that you feel you have been taken advantage of. So...start early with your plan...one that you feel good about...and go from there!
I hope my rambling has made a little sense and has helped at least a bit!
Kristie