Small businesses get nickel-and-dimed by per-user pricing on helpdesks, forms, signatures and scheduling. One-time software makes the toolset a capital expense instead of a creeping payroll line.
The tool this job usually means renting is Chargebee, at $599+/mo โ roughly $7,188 a year, every year. Billoop does the job for a one-time $49 โ running on infrastructure you control.