Cost. This is for the basic case only, not counting two way radio, inverter ect.
Case-40ish dollars MCM electronics "Duratool" case
12 Volt fuse block-20 dollars
Power outlets- 11 dollars for 2 slot, 16 dollars for 3 slot with voltmeter. 26 total
Charge Controller- 10 dollars
Male to Male 12v cable - 10 dollars
Solar Panel- 40 dollars
Batteries- 7AH UPS batteries 20 dollars each x3. 60 dollars
SAE bulkhead connector for solar panel- 10 dollars
Various switches- ??? Shop around? Price varies and you can get them cheap.
Aluminum stock for battery hold down - Can't remeber. Maybe 10 or 15 dollars worth of material with a bunch left over in the corner of my garage waiting to get used on something.
Wiring- I bought 2 spools of wiring from a local parts store for 14 dollars each and still have a bunch left over. Lets say 20 bucks but that's over guesstimating for this project.
236 dollars total. After you factor in the little bits like wiring, connectors, switches ect you're probably looking at 250-280 dollars depending on how cheap you go on the connectors and what not.