I have never heard of SK, I thought Snap on made them and then CDI was the industrial division of Snap On. I found their website but there are no digital torque wrenches, just manual ones.
Snap-On hasn't made their own stuff (for the vast majority of their catalog) in years. For example, I have a Snap-On butane torch/soldering iron somebody gave me. I've always used the gold standard: Portasol. I bought Portasol's top-of-the-line 125W model; Snap-On was exactly the same, save for the colors and Snap-On logo. I bought it to replace my missing Weller, which itself was a rebranded Portasol (no capitalist shame there haha, literally called "Weller Portasol." Also, never lend tools you like to people).
Similarly, my local Matco rep sells a hex-shank slim wire brush kit for cleaning small, straight bores for $150. It's this, rebranded:
I run/use/import a lot of Hazet tools as well: https://www.hazet.de/en/
...German pro-tool brand. Their tools make me very happy, and they still manufacture a lot of their own stuff. However, they rebrand as well; they have a very good LED worklight in their catalog. It's a rebranded version of this:
...I have the Astro Pneumatic version, and anybody who's been around tools for a while knows that name. That is the best worklight I have ever used. If somebody wanted the Hazet version, yes, they could totally pay the 100% markup.
All the pro tool companies do this nowadays, and for about the past 25 years: they're basically big testing and research companies, looking for solid tools made by companies they can strike a branding deal with and sell at a hefty markup. The cult of Snap-On/Matco/Mac Tools exists; note that you've all heard of Snap-On, but you haven't heard of SK. I guarantee that the four SK torque wrenches I bought 7 months ago are identical (save for the logo laser-etched onto the handle) to the ones my buddy down the street paid double for from the Snap-On truck. SK: https://sktools.com/
I'm a professional mechanic nowadays, and I need tools that won't break under heavy use, torque wrenches that will stay accurate after so many hundreds and thousands of clicks (yes, I'm a stickler and put a torque wrench on everything that has a value in the FSM. Yes, I send my torque wrenches out every 6 months for calibration). Doesn't mean I want to pay $500 for a Snap-On torque wrench from the rep when I can get the SK for $250. Of course, most of the mechanics down the street will pay for the name. I call them the Gucci mechanics. But I'm the same way, I like my brands. As in, no "Braun" worklights from Harbor Freight, because the Astro Pneumatic I mentioned above comes from a brand I've come to trust over many years. We know and trust the Snap-On reputation, and they trust the brands I've mentioned to make a product that they can capitalize on (some more).