Here are some places I found I could still buy OpenLinux, despite SCO's claim that they are no longer selling it:
You can get it from Tucows.
You can buy it from a reseller, InActSys.
Here is another one at InActSys.com.
You can even buy it from the Shop Caldera site. Here is the page from when I went there and clicked on buy. I did a screen capture, just in case it disappears.
According to this 2000 press release from Caldera, they had 15,000 partners that would make their Linux products available, so perhaps you can buy it from a lot of other places as well.
If you want to read the SCO nondisclosure agreement, it's online now. It's hard to see why anyone would want to sign this amazing document. Without proof of date and origin of the claimed SCO code, it really means nothing anyway.
Meanwhile, SCO stock is shooting up today. Unless some folks are shorting or something is known by somebody and it just isn't public yet, it's difficult to comprehend.