That's for the IoT variant, which is further segmented into incrementally expensive editions depending on the CPU you want to use it with.
And good luck finding somewhere to buy a single license of that. And even then, there's a high chance software you use (browser, IDEs, ...) will not keep getting updates after 2025.
Extended support ended in Jan 2020 and the paid ESU support ended in Jan 2023 [1]. Are you sure those updates aren't just defender/AV definition updates rather than actual OS updates?