I've seen that one. Very impressive for the timetable. Sadly the wheels on my XS were more than $1k, but they were the most expensive part. I take a while on building things, part of it is money, part is motivation, and then I can finally make parts the way I want so I'm taking the time to make them.
Since my lathe is on the small side making the hub took a week and a half of off and on working. But I'm OK with that since its getting me to where I want the bike to finish.