Here we go again!
The Aisin WS fluid that is sold in the US isn't Aisin's best WS fluid. Their premium fluid, for use in their own transmissions, is the pricier full-synthetic variety that shows the same elevated viscosity at 80C operating temperature as other good full-synthetic fluids (since full-synthetic fluids don't thin out so badly at high temperatures).
I tried to find a source for Aisin's own premium full-synthetic fluid online, but literally NOBODY is allowed to distribute it here in the US (again, because Toyota EPA-certified their US-market cars using the thinner (@80C) semi-synthetic (i.e. cheaper) fluid that gives the best EPA gas mileage, and because Aisin is linked to Toyota).
The full-synthetic, WS-compatible aftermarket fluids aren't limited to being used only in WS-spec cars because they have superior thermal stability, i.e. less thickening at low temperature and less thinning at high temperature. As such, these are superior fluids performance-wise, more versatile and also having better resistance to degrading over time (just like full-synthetic engine oils).
As for the 7.79/qt. price of the Aisin semi-synthetic fluid, does that include shipping?
Compare that price to the MaxLife and TransMax full-synthetics sold at regular stores like Walmart, which sell for around only $5/qt. in four-quart jugs!
I think that Toyota's WS fluid is fine for use in their cars, just not with the original torque converters found in the 2012-2014 2.5L Camrys. In fact, I used $120 (shipped) worth of Toyota WS fluid to thoroughly replace my 2015 Camry's transmission fluid about three years ago.
No real regrets there, other than the extra $60 that I didn't realize (at the time) that I didn't need to spend on pricier, mere semi-synthetic fluid.