Calendly free gives you one event type and one calendar. Standard at $10 a seat removes both limits. Where the Teams tier at $16 becomes necessary, and the Enterprise cliff.
Freshsales starts at $9 per user a month billed annually, with a free plan for up to three users. Where the cheap tier runs out and what Pro at $39 actually adds.
Close puts the phone and inbox at the centre of the CRM instead of bolting them on. The per-seat price is only part of it: call minutes and SMS are billed on top.