A rebuild Rockola is about $800 and up. And original, is pushing north of 2k.
Assume all carbines you see are rebuilds or restorations. If you don't know how to tell a restoration, do not ever pay past a rebuild price. Because you will most likely be taken.
95% + of all carbines were rebuild.
I've looked at every carbine I have ever seen in the past 10 years. I have only seen 3 that were legit untouched original carbines. And I bought all 3.

And if I ever see anymore, I will buy those as well. But it's been 3 out of hundreds, if not thousands.
Most being sold as original are restorations.