I'm not really sure as I've only got 1 machine (30kg+ printed tho), so I'm not sure what other stuff really costs.
So far the only thing on my SV06+ that's actually died by itself was the main switch that was replaced for free, but a 2 pack of similar ones is only $10 and pretty available.
Since I've made a lot of mistakes with this printer I've busted plenty of shit, but there's really not much wrong with the thing. I've also gotten lots of free replacement parts from Sovol even if it was me being a retard. The only issue is that some say the hot end and part cooling are weak. I'm not worried about part cooling, but it'd be worth printing a mount and swapping the head cooling fan for a 5015. Mines suffered a number of massive clogs or whatever you call them, which could have supposedly been avoided with better cooling.
It's basically a massive Prusa clone with a Volcano nozzle, so it's a pretty well proven and long lasting design.
If you get anything with round rods and linear bearings, take everything apart and pack them with grease using the rods as plungers. Print quality improved and sound HALVED. Should save money and downtime later on.
I pondered getting a new printer during Black Friday, but there's really not much else that tempts me
With a $30 Elegoo enclosure I can get it to 40c in my cold basement with ease and get kickass CF Nylon prints, and it's plenty fast for my needs. Nozzles are cheap and ubiquitous if you sand 1mm off the fan duct as you can use Volcano nozzles, and complete hot ends can be had for $15 on AliExpress.
Dealing with a one piece nozzle/hot end doesn't interest me as they seem to be $30+ and a hassle to change, and that price for a wear item is a bit ridiculous when a steel nozzle is like ¢25. I'm not interested in Wi-Fi capability either, although the SV06 has that and I did try it out with Orcaslicer.
I'm sure there's other solid machines, but for the size, features, and price the SV06+ with the Klipper screen seems to be it's own thing.