Bookkeeping, when done right, takes time and expertise. Your company's time is better spent working on the things you do best, rather than spending between 5-10 hours a week (on the low end) just keeping track of your money.
An in-house bookkeeper will cost between $25-$100/hr or about $4000/month (not including benefits and taxes). This doesn't account for employee turnover, employee management, and other requirements of hiring staff.
With SansBull, you get the ease of a SaaS platform with the peace of mind of human experts handling your books.