I've just taken a look at your etsy site. There's nothing wrong with your pens. I'd say your prices are a little cheap for what you're selling. Remember, a lot of etsy shoppers are prepared to pay extra for a handmade item and may discount something which they view as 'cheap'.
My other thought is that Etsy buyers are mostly women and you have a lot of male oriented pens on there.
Other than that, I'm afraid I can't offer any advice, other than what I said before - Etsy isn't a 'upload and leave' type of site. You have to draw your own customers to make it a success.