I have things to sell for a good price for you. I have:

Iron- 500 yen (for ironing your clothes)
boxing equipment-1,000 yen (punching mitts and gloves)
Kitchenware- free
bicycle- 5,000 yen (mamachari)
rc toilet- 500 yen (you heard right, a toy toilet you can control)
prepaid softbank phone-3,000 yen

Meeting place can be Tenjin, Yakuin, Hakata, or Ogori