Welcome Cody! I think Chris had the best suggestion. First pens can vary a lot in quality. If you post a picture in Show Off Your pens, we can give you feedback on how well made it is. Age is not a limitation, but skill is acquired by making more pens. If your turning is a traditional shape, matches the components perfectly, and you use a durable finish like CA or similar, (except not on acrylic) you should be able to get a very good price for your work.
Depending on your customer, you may get bonus points for your age - or they might discount your work - could go either way. If your customer appreciates pens, they are used to paying for it and expect a quality product to cost them some money. If they are not pen buyers, then $10 is going to sound like a waste of money.
I charge 2x what the kit and material normally cost and then I charge $25 per tube for my time and expertise. Assuming $10 kit, $5 blank, I would sell that for $80 plus any shipping that might be required. If I have an unusual blank, the price goes up. Even at $40 you can make a nice profit and start to grow your business. Always make sure your customers know how to refer others to you. Nine people that see it, probably wouldn't pay the cost of the kit, but that 10th person will pay your price. One thing seems pretty certain - you won't get more than you think it is worth.
Good luck with your turning. Show us the picture :wink:
Harry