And that's a huge expense any way you look at it. It's also one of the reasons that high end, small batch blenders like Driven, Amsoil, HPL, etc. don't certify and don't display API certs on their labels. They all make great products, overkill for 99.9% of what's on the road. But while they're great lubes for extreme vehicles, they're just not a good value for most folks. If they had to add in the cost of API certifications spread out over their small volumes, the price would be astronomical.
