I think customize builds are usually around the $1000 range. So 850 is kinda on the low end. Like, for the same price you could get newest standard make and model.
I paid about that for my custom laptop in 2011. I've probably replace the battery once, and the power cable twice. I'm hoping I'd get a few more years out of it. But if the life expectancy of a laptop is 5-6 years, idk.
I keep thinking technology is going to plateau. And for environmental reasons, they'll do away with designed obsolescence and make things last a lifetime. Or at least, make things easier to repair than to replace.