That's because if I recall correctly The Estilio fabric is core-produced in Pakistan with a lot of the other gi's. So when you get down to it, the reason that there are a ton of $90-$100 starter gi's like the nova, fuji's beginner gi etc, is that they're all sourced from the same place, and get charged the same amount, they might alter the gi's a bit. But those companies don't run their own looms making the weave / fabric themselves.
The ones that do are generally the more 'premium brands' you look at Origin Gi's for example. They come up with different weaves and they're paying the overhead for their looms which adds to the cost of your gi at the end of the day. I'm pretty sure shoyroll just commissions their stuff from the same place. And again, I could absolutely be wrong here. And they do modify them a bit, like they might put in a rashguard liner, or add embellishments, maybe reinforce stitching etc.