Before HubSpot enters the chat, many teams glue growth together with Mailchimp, Calendly, and Zapier. It feels lightweight. The loaded invoice — and the human middleware — usually are not. Run your own numbers on the SaaS stack cost calculator.
01 · Sticker vs loaded
An illustrative mid-size month
| Mailchimp (sticker memory)“We are on a cheap plan” | ~$20–$50 |
| Mailchimp loadedContact tier + seats + brand tools | ~$100–$350 |
| Calendly sticker | ~$10–$16/seat |
| Calendly loadedTeam seats + routing | ~$50–$200 |
| Zapier sticker | ~$20–$30 |
| Zapier loadedTask tier for forms → CRM → Slack | ~$50–$150+ |
| Loaded software subtotal | ~$200–$700+ |
Add the person who rebuilds Zaps after every form change and you are back to middleware labor.
02 · What to own instead
Booking and email on your CRM
Owned path: site form and scheduler write to a CRM you control; email sends from the same record. No task meter on the happy path. Score keep/cut/rebuild with the audit checklist.