noun
trader who buys credit card purchases from debtors at a discount
A person or business that provides cash to debtors by having them buy expensive items with credit cards, then buying those items at a fraction of the price. This is a specific, somewhat niche term related to a particular type of financial scheme.
買取屋を利用すると、借金がさらに増える危険がある。
Using a buy-back trader can risk increasing your debt even further.
彼は買取屋に頼って、クレジットカードで高額な
He was made to buy expensive items with his credit card by relying on a buy-back trader.
Compound of 買い取り (kaitori, 'buying up, purchase') and 屋 (ya, 'shop, dealer').