Anyone selling im in the UK
i personally buy right away the 8nm and that save me 50 eurs from boost kit
5nm is not simply en-oh
Last Black Friday, Fanatec put Boost Kits on sale for $100, that's when I picked mine up.
They may or may not go on sale again for Black Friday this year... but with all of Fanatec's current logistical woes, I can't say that I'd recommend buying anything from them now or in the near future.
There are non official boost kits on other market places like aliexpress for way cheaper. Works the same just fine.