There is no confusion.
The problem is that, if you ordered already, you no longer have luxury of choosing between price X or price Y.
And to address that problem, Cointerra promised, that in case of changing pricing they will reprice the orders or provide a credit to existing customers.

So far no such announcement was made.
So this brings the question whether they are going to stand up to their promise?

At least to me, TerraMiner IV - 2TH shipping in December 31st is same product as TerraMiner IV - 2TH shipping in January 1st.