It's a bit late but I figured I'd share what I charge to install a system. This is in Utah, my company is Utah Off Grid Solar.
These prices are for almost all RVs/Trailers/Fifth wheels. I use rigid panels except when there are fiberglass roofs, I use flexible panels. All of these systems use victron smartsolar charge controllers and include installation.
Almost always I mount panels in series where possible.
I also do inverters starting at $1400 for a 3kw renogy inverter. I do 230Ah lithium batteries for $850 installed, and 200aH self-heating lithium batteries for $1000.
