That's a G (master) lens with OSS. The equivalent would be the 24-105 f/4L IS, which is $200 less.
That is not a G Master lens. The G Master lenses are quite a bit more expensive. I don't believe Sony even makes a 24-105 G Master: https://www.sony.com/electronics/g-master-lenses
Either way, the quality of all Sony native E-mount lenses are amazing.