I'm rounding the corner (almost done!!) on my first Victron install. Nothing crazy, Multi-II, Cerbo, MPPT controller, Lynx, Shunt.. The "basic" setup to give most of the functionality available for an RV install.
Yes, it's expensive. Not absurd, but certainly higher priced than other reputable options, and quite a bit higher than no-name stuff.
But, as someone who is works in an engineering field (totally unrelated to electrical), I must say, this is some well designed gear. It just works; plug A into B, they integrate together and start working. Cables line up, things are the size they are supposed to be (important for planning), everything feels like it's built well (time will tell if that is correct, but lots of happy customers seems to indicate, it probably is).
The hardest part of Victron is the learning curve. They have about 10 different models of Multiplus. If you include the Quattro, add another dozen or so. Same thing with solar. Shoot, they even have a few versions of their Lynx (power in, M8 or M10). It's a lot of reading and a lot to learn to understand how to build a system with Victron, a lot of the alternatives out there, plug solar in here, plug shore in here, done. That's not a knock; after a few days of reading, I understand why they have so many options, but it certainly pushes some customers away.
The good thing, at least in the RV world, everyone knows what the "blue stuff" is, and, if you go to sell your RV, a Victron install is going to add a lot more value to the unit than pretty much any other brand. So, eventually, you'll probably get some of that cost back, almost certainly not enough to make up the difference in price, but, some.