Looks like your numbers are more discrete than what I sell. The post office is what kills my sales. People just don't realize it doesn't matter if their item weighs 2 oz or 13, it's still gonna cost $4.60 for shipping. As far as inventory, 0...good for you. You got a good deal going.
I see your numbers and they look right for you, but it's not the same for me....I will take a hit!