First plot on upper ice cliff: 3 Fail Shales (250K coins each) and 1 Radiating Rock (100K coins). Total cost of 850K coins to clear. Can place a small habitat by removing only the Radiating Rock
Down on lower ice cliff: 3 Fail Shales and 1 Frozen Fir (25K coins). Total cost of 775K coins to clear. Can place a small habitat by removing just 1 Fail Shale..
The 2 plots that I skipped on the lower ice cliff have the following obstacles:
A. 2 Fail Shales and 1 Radiating Rock. Total cost of 600K coins to clear.
B. 1 Fail Shale and 1 Harmful Hemlocks. Total cost of 700K coins to clear.
As you can see, we now have a few choices on which plot to explore. But whichever way you turn, the prices are ghastly.