I love to see this topic come up!
There are so many different points of view and opinions on this and none of them are wrong.
I think there are several things you have to factor into your decision.
I think a good first step is to realisticly evaluate where you are in terms of your level of carving skill and then search for other carvers at a similar level and see where their prices are.
Using that as a guide it then gets to be more of a personal decision.....what are your goals, at what price are you willing to part with your creations that you won't regret afterwards (be honest!) and of course the amont of time involved.
Some of my deciding factors are: I carve very quickly in mostly softer materials (bark & bass wood), I carve for a living so I don't want my inventory sitting around for long and I have a good art background so ideas usualy come to me easily.
I often hear that my prices are 'very reasonable' or 'too low' but over all I'm happy with where they are at for now.
I think you also have to re-evaluate this at least twice a year.
I could go on but lucky for everyone I'll stop here
I look forward to seeing everyones take on this.
greg