People keep saying this, but it's pretty reasonable as far as tablets go. Its base is 16GB and 512GB, and it MSRPs for $713 USD with a sale to $655 for quite awhile now (though out of stock). The Galaxy Tab S9 FE+ with 12GB and 256GB is $700 on sale for $650. Considering the nature of the OS, maybe the standard FE is more equivalent with 8GB and 256GB at $520 on sale for $470. But you still have half the storage, and the Starlite is upgradable with standard M.2 NVME drive.
Even then, you're getting a full Linux OS if that's what you're after. That's a very niche market right now, to get a fully Linux capable tablet, much less one where the manufacturer supports and encourages it. Hell, it uses coreboot firmware. Considering the niche market, I'd say that's a pretty damned good price. But if you don't want full Linux support, and are happier with AOSP or Google's Android, you can get a Pixel tablet for $400, or $500 with 256GB.
Sure you can get tablets for significantly less, like the Fire stuff from Amazon and a last-gen, base model iPad. But all of those have severe disadvantages as far as software and/or privacy. The N200 CPU in the Starlite isn't going to set any records, but the ability to run full fat Linux puts it in a segment with the Surface and other Windows tablets. That's something that the iPad Pro can't even compete with, despite Apple fans begging for MacOS on those models for years.