The first is the "solar roof" sort of thing that... we'll see how maintainable it is, but you get to write a properly large check for it, and most of the people I know with it have a couple Powerwalls, and are quite adverse to sharing any sort of actual pricing on it, muttering about "Well, wife acceptance factor" and "But it'll be worth it in power outages..." and such. In other words, almost certainly north of $5/W, and they likely didn't get an itemized invoice of materials/labor/etc.
Tesla also, in some markets, has a "standard solar panel" offering that typically comes in around $2.50/W, give or take, and... well, you get what you pay for, typically. It ranges from "decent and a good deal" to "a hot mess," and you've no idea what you're going to get ahead of time.
... and then there are people like me who have sub-$1.50/W installs (DIY). Mine came in around there, but after figuring out how to optimize it better, a neighbor's build came in around $1/W for a 21kW system.
//EDIT: And, yes, it takes a lot of learning to do. Cross that with the tens of thousands of dollars saved, I think it's well worth the hassle.