It’s true that we are working on our TV tie-in book, but the price hasn’t been decided yet.
The value is in various steps. Each step is a different amount, and each amount is a price or cost.
The reading is the kun'yomi reading for 値 plus the on'yomi reading for 段. Combine them together to get the reading here. You've learned both of these readings already, so just remember 値 is ね because you neigh (ね) when you see a good price.