I bought my bare Pi 400 for £67 + £5 for international shipping. That's £72 or €83.50.
I think this is what they claimed ("under £70") and I am more than pleased with this price.
It is the full kit that costs £100. It just adds a monitor cable, a mouse, as 16GB(!) SD card and a PSU. £30 for these extras is not excessively expensive, but not cheap either. I already have all required accessories, so no need to buy the kit.
I don't really understand the complaints. Yes with the Pi Zero it was impossible to get one for £5, but then, at this price the demand was just to big. I mean, at £5 I would right now buy like 10 just to have them around and ready for whatever application I might come across. Multiply this to all potential customers in the world and there would never be enough stock... And the foundation thus had to limit each purchase to one unit. Plus they don't make profit out of shipping. I agree, the situation sucks, but it could hardly be improved, I guess, especially when the product costs the same or less than the shipping itself.
Vitor