Toronto

Whitebook is probably just a variant on whitebox, meaning it comes from a no-name brand. These usually come unbranded from the same Original Design Manufacturers (ODMs) that the big players use. Small OEMs can easily brand these as their own without investing a lot in engineering. The downside is that there are a bunch of other small OEMs doing the exact same thing.

As for whether it's a scam, it's tough to say. Those specs are in line with the Thinkpad t590, which is readily available on the secondhand market as corporate users upgrade to newer models. But I'm not familiar with that marketplace or how a transaction would go.

As for whether it's worth getting (assuming no scam), you would first have to price the RAM and SSD. Then you must consider installation, which might be difficult. You might also have trouble getting drivers if you can't identify the ODM or they don't offer support to end users.

All things considered, I would look to the used enterprise market. Lenovo Thinkpad, HP Elitebook, and Dell Latitude (and ONLY these lines. Do not get their consumer-grade lines, especially not used). They probably have what you're looking for, in a much better and verifiable package, and around the same price.