I'm retiring as a software developer and selling my MacOS and iOS apps, branding, source code, everything. I developed the apps and sell them thru the App Store. My two main expenses are less than $200 per year (web hosting and Apple developer subscription). I work out of a spare room at my house, or out of my RV (Winnebago Revel) when traveling; all you need is a computer and Internet. More info: Apps for sale.