I checked on bikehubstore. Couldn't see Chris King hubs on there. If you can price up the same build for $700, I'll buy another pair because they are fantastic wheels, and the build quality and service from Derek at Wheelsmith is amazing. Chris King hubs are expensive in the UK. It is that element of this build that bumped up the price, not the rims, which are cheap enough to replace that (and I stress again) I can use these wheels as my everyday/everypothole pair.
Gigantex are a reputable manufacturer, and make rims for many big names. With somebody else's stickers attached, I am sure many of us have bought their rims and rave about them. Have you actually seen these specific rims in the flesh to know how they compare in weight, build quality and shape?
I am generally a brand junky when it comes to my cycling kit, but these rims are great. I say that with Zipps 404, Lightweight, Hyperons, Boras and Reynolds in my wheel wardrobe. I can compare side by side.
In the end as time passes I have a great set of hubs on which to build numerous rims. given Zipp's spare rim prices, their product is virtually disposable rather than repairable.
I understsnd the price debate, but since I already own a set of Zipp 404s, I wanted something different.