All we had to do was purchase the software and several licenses and see how we liked it. We could do the implementation ourselves, at our pace. Overall, xTuple gave us alternatives that no other vendor could.
What about if I'm a perpetual license customer?
The perpetual license is a one-time purchase of the then-current version of the software. Software maintenance is priced separately - currently at 10% of the current per-user license cost, and required for at least the first year. Direct support from xTuple is another 10% on top of the maintenance (which is a prerequisite for support).