I had a quick look at their web site and saw
An astonishingly quick frame, designed and hand made in the UK by experienced carbon fibre experts.
Carbon fibre isn't a material that I know a lot about, so I find it very easy to be intimidated or confused by it, it's exotic, it needs an expensive autoclave and its complicated to design the layup.
Yet for at least the last dozen years OOA (Out Of Autoclave) has been a valid method for making carbon fibre parts in the aerospace industry. You put your uncured part in a polythene bag, suck the air out and cook it in a relatively cheap oven.
The software to design carbon fibre products has drifted down to the commodity level and there are loads of people who have experience in making carbon fibre parts in the motor and aerospace industries.
It is also perfectly possible to make carbon fibre frames in pretty much the same way as steel frames, joined tubes, just glued together rather than welded. This means that there is no need to make a mould for the whole frame and different moulds in different sizes.
Clearly the tubes don't have to be "tube" shaped and you can add a cosmetic layer where ever you want to.
Have a look at
https://www.reillycycleworks.com an ex F1 chap making 1 or 2 frames a week.
So it is not that unreasonable to expect a custom CF frame to cost something similar to frame made out of one of the more expensive metals, such as 953. Someone committed to small production runs could easily bring that price down quite a bit further.
Of course none of this means that the frame maker has sorted out the quirks of using carbon fibre to make frames, but McLaren Applied Tech got involved with Specialized in 2017 before becoming a part sponsor of a team.
This would seem to me to be an area that Bob Jackson is going to need to get involved in if they want a future beyond the small steel market. If they do go down this route by the end of 2021 bespoke custom carbon would be mainstream.
Or are they going to do an Argos,
https://argoscycles.com/new-frames/reynolds/ £2,695 for a custom 525 frame or £2,995 for 853. Either they don't want any new business or are just milking the market.