To be honest, I wanted to say "Total cost would be great." No idea, why it's saying "would've been great" which is rude to say the least. Accept my apologies.
I have been looking for information like this. I live in the US, but I want to send batteries and solar panels to Nigeria for my family. Like you said, it's hard to get panels and even batteries that are rated what they claim. What dropshipping company are you using? And how easy is it to ship...