Minifree's regular T400 is also available: https://minifree.org/product/libreboot-t400/
The price is much lower than Technoethical's T400S and also has bluetooth built in on most models: Minifree's T400 is 198 EUR, Technoethical's T400S is 778 EUR.
The actual thickness of the T400S is not much different to the T400, while the CPUs on the T400S are not upgradeable (for instance, on regular T400 you can install and use a quad-core CPU).
In terms of features and performance, the T400 and T400S are almost identical. Minifree also provides fast shipping and is run by me, Libreboot's founder.
