None are shot in 4k anyway. they say 3k but it's not actually 3k, it's a bit smaller than the standard 2880 x 1620.
I agree that it should say if its upscaled and it shouldn't cost the same as a native resolution card as the upscale is meh quality.
Actually they are filming in 4K or Higher. But are Encoded in what they refer to as 3K or UHD
The Reason?
Because at the time, the Maximum screen sizes were in the 3 K size.
So the Cards were encoded in a Size that would fit on the Screen.
Totem has, to the best of my Knowledge, Never Upscaled a card that was Filmed in a lower Resolution and released it in a higher resolution than that which it was recorded in.
( the "D" series of classics is an exception )