€0.13/watt* here, random store I found online in my country, but it is a legitimate business, I checked that much. Not quite $0.12, but close enough and I didn't spend much time looking for it.

Though I feel like just a few months ago I couldn't find anything this cheap.

Either way, for me personally, my geographical location makes it kinda useless in the winter and for some months I'd have nothing to do with the excess I would produce from just a few panels - in the summer, there's no point selling to the grid during daytime and the nights are too short to make proper use of any stored energy, you'd have fully charged batteries all the time.

Couple of months in spring and fall where things would run into a nice equilibrium though. Unfortunately not enough savings to pay for a battery. Think sodium batteries will change that over the coming years though, so I might go for it eventually.

* just noticed this is excluding VAT, so add 24% on top - but then price comparisons make sense without VAT anyway, since that varies by country. I think most US states have much lower sales tax than our VAT.