Without going into other differences between a 10Gb/s usb-c dock vs a 40Gb/s thunderbolt dock, just want to note that all of our docks are designed for desktops and laptops alike.
Of course they
work with both desktops and laptops, but they're called "docks" for a reason - their Unique Selling Point is as a
single-cable docking solution for laptops. Some desktop users
may need additional HDMI, ethernet, USB-A etc. ports - but most desktops already have some of those ports and 60 or 90W power only available on the
upstream TB port is no use to a desktop user - yet all of these add to the cost and complexity of the dock.
Even on "hubs" you see a bit of laptop bias: the OWC TB4 Hub has the upstream TB port on the front, where a laptop user would need it, rather than the back, where a desktop user would want it - and I'm not just getting at OWC here - I have a Caldigit Elements hub and
that has the upstream on the side rather than the "back". (NB: in both cases I'm taking the "back" to be where the barrel connector for the power brick is!)
To be fair, OWC also do the MiniStack STX (under "external drives") which
is very much designed for desktops (although, equally, it would work on a laptop).
The product is three years old, has Thunderbolt 3 (not 4)
TB4 vs TB3 is not such a big deal if you want "legacy" ports rather than more TB connections. There's no immediate advantage to TB4 if it's just driving USB 3 and DisplayPort 1.2 stuff (in fact, its a bit' swings and roundabouts' with USB 3). TB3 vs. TB4 is convoluted, the main advantage of TB4 is about allowing multiple downstream TB ports, which don't run USB 3 kit any faster than a plain old USB-C or A- port.
Promoting a deal based on the MSRP of three years ago and ignoring what it's been selling at for the past long while is at best misleading and at worst deceitful
Well, yes - but, honestly, file under "puff" (alongside "Prime Day prices" and every other "Sale!!!" in the history of money). Apart from that, while I don't have the product and can't vouch for its quality/reliability, $99 seems like a reasonable deal for old, but still useful, tech that
did cost > $200 3 years ago.