http://www.helloproject.com/event/detail/927c90db8cad64c7501696562b4758596a184c1e
http://www.helloproject.com/event/detail/059e8f9ab7a1e753237adb072a5460d9d18046bd
http://www.helloproject.com/event/detail/a86c82f6ac70098f4db80ed6fc66901224e2b79b
http://www.helloproject.com/event/detail/bb3653006cb6fb704d728a4e75fc7ac2c8c856a8
売れにくい要因があるのでしょうか。