One example month, priced four ways — per call (Smith.ai), per minute (Ruby), per conversation (Jobber) and flat (Plunger AI). Take a busy month: 300 answered calls.
Smith.ai (AI): the $150 plan covers 75 calls. The other 225 cost $2.50 each — that's $712.50 for the month, before the $1.50-per-call booking add-on.
Ruby: minutes, not calls. 300 calls at even 3 minutes each is 900 minutes. Ruby's largest bundle is 500 minutes for $1,725 — the month runs past the bundle before it runs out.
Jobber: $29 plus 270 extra conversations at $0.79 comes to $242.30 — genuinely cheap, if you're on Jobber, on top of your Jobber plan. It is also answering only: it never calls a single unsold estimate.
Plunger AI — Lead Recycling + AI After Dark at a mid-size list: $349 flat. 300 calls or thousands of dials, the bill is the same — and the outbound calls to your past customers and unsold estimates are already in it.