It will take you awhile to figure out how much inventory you should build based on daily, weekly, and monthly demand. I don't want to speak for everyone, but speaking for myself, I don't do it for the money. At the same time, I don't want to dump a large sum down the drain. In the process of building this small business, my greatest income has been meeting new and interesting people and developing friends. Please just make sure you enjoy yourself and if you make some extra money, that a bonus. I would put some of the guys on here against any developer from other large companies and being biased, I thing many of us on here are pretty unique. I welcome you to this passion.