ticket reseller; discount ticket shop
A shop that buys and sells unused gift certificates, coupons, travel tickets, concert tickets, and other prepaid vouchers at discounted prices. Often called 金券ショップ.
wasei-eigo (Japanese-coined English), from ticket shop
See also: 金券ショップ (きんけんショップ)
I bought a Shinkansen coupon ticket cheaply at the ticket shop in front of the station.
I sold my unused gift certificates to a ticket reseller.