Iron Heart has a model, 1955s, that is repro of the classic 50's cut with a high waist. Not cheap though. http://www.ironheart.co.uk/bottoms/1955s.html
Those look like great jeans - I'd say worth the investment!
A couple other options,
Dyer & Jenkins
These jeans are made in the USA, ostensibly never leaving the USA. $125? a bargain for what you are getting.
Made somewhere out of sturdy materials, the true "Dad" jean. $40 for the 15.75 ounce weight.
I plan on owning both pairs in the next month.
For what it's worth,
Deep Pocket Jean Co.
Made in LA as well; I do own a pair made by them, not terribly impressed.