Before selling me my Toyota as "CPO," the dealership installed new Toyota branded wiper blades. I assumed they were same as the original blades, so I last year bought new OE genuine Toyota refills (the rubber part only). When I later needed to install those new Toyota refills, I discovered they're incompatible with the Toyota blades that I got with the car, because the width of the metal strip is different. Ridiculous! So now I have leftover good used blades, and leftover never-used refills that don't fit them, so had to buy aftermarket blades anyway. The refills in the aftermarket blades would fit my leftover Toyota blades, which appear to be better quality.
It's annoying that refills became hard to find. Forcing us to replace entire blades every time the rubber wears out is more profitable, I guess.