Here are the possible solutions for how perfume is sold and this puzzle's title clue
Answer
Clue
Relevancy
bytheounce
Clue
How perfume is sold ... and this puzzle's title
ester
Clue
Compound found in perfume and this puzzle's theme answers
Definition
a compound formed by the condensation of an alcohol and an acid, with elimination of water
meta
Clue
Puzzle-within-a-puzzle puzzle
Definition
(US) concerned with cultural conventions; (of an artistic work) self-referential
magazineinserts
Clue
Perfume samples, maybe ... or what this puzzle's circles are
tmi
Clue
Brief version of this puzzle's title hidden in eight long puzzle answers
movingon
Clue
"And now for the next one" ... and an alternate title for this puzzle
asif
Clue
Valley girl's "yeah, right" [IMPORTANT: SEE THE 'NOTE' (above) for key info about this week's puzzle and SEE THE LAST CLUE DOWN for the explanation of last week's puzzle.]
makeajoyfulnoise
Clue
Psalm 100 excerpt suggested by six puzzle answers and graphically represented by certain black squares in this puzzle