Aloha Ipconley, I hope you will enjoy IAP, gain from it and in a while be contributing to the fun and what is a near unlimited knowledge base for us pen turners. To help a bit in your price setting, you may benefit from considering your context. This would include (but by far is not limited to) what you offer and what does your customer think of you.
What you offer: What grade or level of kit, and what variety do you have? Consider the type and cost of barrel materials (common, expensive, vintage, very rare,etc.). How well does your skill level translate into you producing a top notch pen?Do you incorporate unique design elements. Do you have a professional display ready for "show time", or a few similar pens in a small case?
What does your customer think of you: Do you come across as a newbie hobbyist or a knowledgeable pen maker and seller? Does your typical potential customer consider $30 for a pen a crazy high price, or would they grab at a $200 pen on a whim? How much of a 'Natural' are you at sales?
There are many more considerations like these that affect your sales prices and successes. If you are quite new at all of this you prices will tend to be lower (and, of course, ready to go higher as you get into it more, if so inclined. You can see why it is difficult to settle on what is your right price structure, but you learn by doing. One caution, is to to avoid selling yourself short. Avoid going super low to break in to the market. Go read some of the refs mentioned, and have a lot of fun along the way. Once again, welcome to IAP.