See Installing Klipper with KIAUH
For sure, you will need 1h+. I’d not dare boasting that I could do it in less.
It is fair and justified to use this time (even more for a novice). In most cases, such comparisons are unfair.
A halfway fair ranking in complexity / time effort would be:
- Buy a printer with Marlin preinstalled
- Update a preinstalled Marlin printer with a downloaded firmware file exactly for this printer
- Install Klipper on a non-Klipper printer OR compile a newer Marlin from sources yourself and install it.
So this is from easy to hard, from fast to more time-consuming.