、。
Good words are worth much and cost little.
Literal
Good words [topic-は] great [of-の] value [subject-が] exists-が, money [topic-は] hardly does-not-take.
A proverb-style observation, connecting two clauses with が ('but, and yet'). 多大の価値 ('great value'). 金はほとんどかからない ('money hardly takes') uses かかる for 'cost/take.' A wisdom about the cheap power of kind words.