Four times more expensive than Wiggle's Cosine Disc.
They do do tubeless mind. Which is good. But it's a lot of money.
Cosine is Wiggle. Are they going out of business?
Then they will refund you...
No, but they will change hubs and rims and keep no stock of spares... we have seen this over and over. Can you get hold of a freehub for a pair of Pro-Lite Bracciano 2012 (10 speed)? No... can you get hold of any spare for Planet X wheels older than 12 months? No.
Can you get a freehub for a pair of Ksyrium 2010, yes... can you get hold of a hub cap and tracomp spokes for a pair of R-Sys 2010? Yes... and Mavic has a reputation for being bad at spares...