Per seat while you are finding your feet, priced on volume when per-seat stops making sense, and a route to owning the thing outright if that is where you want to end up. Founding pricing is locked in for as long as you stay.
Drag your headcount. Untick anything you do not pay for. These are published list prices, seat for seat, with no favourable rounding.
The things other vendors quote separately. Migration in particular is the one that usually arrives as a five-figure services line after you have signed.
Most software relationships end where they start: you rent, we run it, indefinitely. There is another way to buy this. We build, we teach, we co-build alongside your team, and then we hand over the keys - leaving a platform licence rather than a per-seat bill.
For any startup in a partnering incubator, at a partnering university, or with institutional funding. Early teams are the ones most damaged by a fragmented stack and least able to pay for the fix, which is the whole reason this exists.