That's a good price if it's fully synthetic...but there are lots of "blends" now on the shelf...
A while back Mobil 1 sued another top brand because the other brand claimed fully synthetic while they were using "dino" based compounds...
Not sure when that first 10 gallon change will happen for me(7hrs)...but when it does it will be synthetic for cold weather flowability,high temp stability, more shear stable than dino oils.