Found the 10% 8% off "BLF" banggood coupon at budgetlightforum: cheapy Ultrafire 18650 side switch. Same thread highlighting two clone Small Sun flashlights are on average $1.80 cheaper than the Small Sun version. Great multipurpose little flashlights. I like the ZY-T11 as can be charged with an old Nokia 3.5mm charger without ever needing to remove the battery.
US$8.76 Small Sun ZY-T11 clone [original]: +ve: charging port, tailstand, tail lockout. -ve: plastic reflector??
Or US$10.20 with a charger.
US$9.19 Small Sun ZY-T29 clone [original]: +ve: aluminium reflector. -ve: no charging port or tailstand, slightly longer.
Both uses 18650 batteries to power them. Recommend getting decent Japanese protected cells if using the charging port: Sanyo 2600/2800maH or Panasonic 3100/3400MaH ones elsewhere. Avoid the Chinese Ultrafire/Trustfire ones banggood sells due to poor comparative runtime per details.