It sounds like you have taken some form of advertising copy very seriously. There are many choices available. Judging from the price I assume that a genuine Prusa is a quality item. “Kits” are typically very time consuming and can be a troubleshooting nightmare. A friend of mine spent an incredible amount of time and money on a large format 3D printer kit. He never did get it to work well.
Maybe I’m a printer snob, but I bought an I3 mk3 kit at the beginning of the covid shutdown. Never had a problem assembling it or getting it to work. I’ve used it a lot since then. Only recently have I had to make a repair. I’ve gone through several print surfaces and never even changed the nozzle (I should have, it got encapsulated in plastic and caused me to have to replace the hot end)
I have a friend who I finally persuaded to step into the water. He bought an Ender. It has a slightly bigger bed but only one Z-axis screw. He had a devil of a time getting it to work (and it wasn’t a kit). Said he boxed it up several times to send it back but always changed his mind. He made several enhancements including adding a second Z-axis screw that, unlike the Prusa, is belt coupled to the one z-axis motor. When he finally did get it going he had within a couple of hundred dollars of what the Prusa kit cost.
The mk4 looks to be a quantum step up and as soon as I can get the kit, I will.