Possible Clues:

• For-sale classified letters
• "... and that price is negotiable," in classifieds
• "That price is negotiable," in ads
• 'That price is negotiable,' in ads
• "Name a price--I'm flexible," in ads
• "Otoh, what will you pay?"
• Tibetan cairn
• 'Otoh, what will you pay?'
• Craigslist abbr
• Mongolian cairn