I'me guessing it's a total custom job. Someone in the kiting community should have some idea about it.
That disk brake from a bicycle was cool.
I doubt most folks would be willing to pay that kind of money.
Don't believe it is a custom job. Found a source for it and the price was pretty much in line with the estimate on the show.
Reel Size: 26cm (10.24 inches)
Weight: 3.5 kg (7.72 lbs)... without line
Shipping to US: $115.47 via EMS
Total CC Burn: $766.00
But we live in a world where belt buckles can run $57,900 and shoe lace tips can run $6,100... so it's all for giggle in the end.
Still it's fun to look at pictures....