System Six Alternatives

Publishes its price from the first tier, so the monthly cost is knowable before the call, on accrual books and a monthly close.

Publishes both cadences and what each costs, and puts payroll and tax with the bookkeeping under one team on QuickBooks or Xero.

Runs the whole back office of an operating business rather than the books alone, though its tiers are still quoted rather than published.

For the case where the books have to be rebuilt before anybody can run them, which is a different job from keeping them.