The idea of the JOBS act mini-IPO was to let 10 million dollar companies IPO. There are dollar and number of investor limits, but they're generous. ($1BN and 2000 investors, I think.) Above that, the regular IPO rules apply.
TrueCar, Zoës Kitchen, GlycoMimetics, ChannelAdvisor, and Malibu Boats all went public via this route, but on a larger scale, around $100M each. They did a proper IPO, where investors got publicly tradeable shares, not this weird "SAFE" thing.