I agree with Graham, Bob and Walters quotes..
At one point in time the pen turner and seller was seen as an "irritation" by the many so called woodturners many didn't believe it was worth doing as there were many more skills used in woodturning in general and so they appeared to try and elevate themselves above pen turning..
However, I have seen many many more woodturners switching to pens as they see it attracts punters to the table at the Fayre they are standing at to sell their wears..
They are finding the pens are selling, but I suspect that many put them on as a loss leader. (Seen the prices myself.) As Bob explained, start low then you can't get the price up, start high at least you can drop the price for a discount..
Along with the now many penturners that are in the market for selling it's getting even more of a challenge.. I know from the market stalls I have been too that there are many selling pens where you would have only seen one if you were lucky.
Some disagree with the pens and kits donated to "charities" raising money for the good causes, I see it as it should be keeping the prices up, as many of the people buying those donated hand made pens understand that they are helping people so tend to pay a little more for them. so can only help keep the prices up.
What we also find is that many of the pen sellers are doing it for therapy, often retired and doing it to keep them going and helping them make friends with like minded people. (Such as on here)
My view on pricing is;
1.For business and making a living, then be prepared to price your pens accordingly and include every cost.
2. For pleasure. Then price the pens at what you would be happy to receive for them.. but importantly cover your basic landed costs of kits, blanks and replenishable materials (glue, sand paper and tooling) (landed costs are pricing including all shipping to your door)