2- 320 watt residential panels

Generally, how much money would you have to commit to this approach? Where did you buy it, name, model, etc.

Hi, All was sourced online except the panels which I found locally. Panels were $200 each, New, Talsun solar TP6H60M-320W full black Monocrystaline . Solar controller was $300, Victron Smart Solar, 100/50 mppt. Panel mounts, wiring, circuit breakers another $150+ easily. Batteries, 3 ReBel RB12V100AH-201, e-bay, $480 each. I never plug my RV in unless I want to run A/C.