I'm sorry, but the commercial aspect of this just seems crazy. Would people really pay money for this, or ever want a code review (one of the plan differentiators)?
Companies are willing to trade money for a guarantee that something they are adopting in anger will stick around. That said I don't know if this pricing model is the right way to go about it, price signaling is a big factor at the enterprise level. For everyone below enterprise this will feel like a donation.
On a slightly different note, is anyone familiar with a successful AGPL licensed project? I worked with an OS teams a few years back where someone involved made the decision to go AGPL for commercial reasons and 100% of the OS contributions dried up over night.