"The term Senkodai (fee for incense sticks) came to mean a tip. The price of one incense stick at the time was 100 hiki, or about 20,000 yen in today's value. If a geisha could serve an ozashiki party by herself for as long as it took to burn one incense stick (about 30 minutes), her competence was rated as near perfect. At that level of professionalism, she was said to have “gotten on her feet” ("ippon-dachi suru”)."