Crossword Puzzle Second indicator?

Clue: Second indicator?

Low price indicator (REDTAG with 6 letters)
Trend indicator, perhaps (SPIKE with 5 letters)
Seconds for Holmes (AIDES with 5 letters)
To change the topic, or where Dracula gets seconds? (INANOTHERVEIN with 13 letters)
Rush job indicator (ASAP with 4 letters)
Ozone indicator (ODOR with 4 letters)
Patch test indicator (REDNESS with 7 letters)
It might be secondhand (SMOKE with 5 letters)
"Let's have seconds!" (MORE with 4 letters)
Good economic indicators (UPS with 3 letters)