Price Calculator - pay for what you use model

Getscreen.me - cloud-based remote desktop in the browser. We used to have fixed prices for subscriptions with a limited number of devices to connect.

Users sometimes said that they didn't need 50 computers, but 58 or 70. And to do that, they had to buy a plan with 100 computers permanently available. Not everyone wanted to overpay, so we decided to introduce flexible pricing and let users choose the number of devices and operators, and add the necessary features for remote access to the cart.

And we got a calculator like this: https://getscreen.me/en/plan

Customers are happy and the opportunities to sell the product have increased.

Have you tried implementing a pricing calculator model?