Of course I collect sales tax for the state (I learned my lesson on that, the hard way, about 35 years ago selling ultralight aircraft), but you are correct, my #'s were skewed by failing to add the tax. My point is the same, solar has gotten way cheap! And it's amazing my pricing is still cheaper then HD! I don't make a living selling solar BTW, more of a hobby biz.
I haven't dealt with any "12 volt" modules for years now, the pricing on the larger panels is so good, buying a MPPT charge controller (if off grid and charging batteries) is well worth it. My stock watering customers all like them, as the Grundfos SQ Flex pumps can handle the higher voltage. grid tie its a non issue of course. But yeah, some guy looking for a small module to put on his RV, is better off going to HD.