Zero fees, and you can set it and forget it!
In all seriousness the Boglehead strategy looks neat, I'll take a look. Is it difficult to start an ETF? Seems like all of these should just be ETFs you can purchase at any brokerage.
Starting an ETF is highly regulated, this differs in that these algorithms just manage your money interfacing with the public market rather than moving in ETF. Less regulation, but encounters tax implications (hence the less frequent trading of these models) among other things.
As for starting an ETF... Well minimal capital requirement is 100k, to launch it's probably 300k total investment. Then there is a lot of legal requirements and obligations. Whole process is at least 6 months
I guess it depends on what's your goal. Some brokerages let you create a bundle of stocks and share them publicly or privately. Which is sound more like what you want.