If it's 10 cents per watt why are prices on Amazon still 6 times that?
https://www.amazon.in/WAAREE-TOPCON-575-Bifacial-Performance...
It turns out that these calculations are for utility scale purchases. You need to be buying thousands of panels to realize them.
That being said, I have noticed in the last year or so that you can find some pretty good individual panel deals, closer to $0.5/watt.
https://www.solartradesales.co.uk/8-33-solar-430w-full-black...