Three things, in this order, without the rep touching the CRM.
One sign-in. Sell watches the threads and meetings that involve an account you are working.
The call, the reply, the demo. Each one is logged to the right opportunity with a summary and a timestamp.
Stage, close date and forecast category move with the evidence. Your Monday pipeline review starts from the truth.
Your first five users are free for as long as you use Sell. Every user after that is $2 a month, or $20 a year. No tiers, no contracts, no per-feature upsells.
Lead, Sell and Customer Success price the same way. Run all three and the whole CRM suite tops out at $6 per user per month.