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Actually it would be better for potential buyers to have a person who had no pecuniary interest involved play it and give an objective review.
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Man I had to look that up

pecuniary

relating to or consisting of money.
"he admitted obtaining a pecuniary advantage by deception"
synonyms:   financial, monetary, money, fiscal, economic, capital, commercial, budgetary
"he was free from all pecuniary anxieties"