FHG2 - Areomancy Spells build using Differing Modifiers

[Mark Taylor]

Many of the spells in the Areomancy section of FHG2 are built using the Differing Modifiers rules for UOO Powers. For these spells, two different Total Costs are given. Am I correct in assuming (based on the example of Differing Modifiers given on 5E p. 177) that the spellcaster buying the spells to grant the abilities pays only the second figure given for Total Cost, the one listed at the end of the "Casting:" section for each spell?

[Steve Long]

Yes, that's correct.