noun
price-support measures for contraband goods
A specialized economic term referring to government or institutional price-support measures applied to illegal or black-market goods. Rare and domain-specific.
闇再販は、非合法な商品の価格を維持するための政策を指す。
Yami-saihan refers to policies aimed at maintaining the prices of illegal goods.
Compound of 闇 (yami, 'darkness; black market') and 再販 (saihan, 'resale; price maintenance'). The exact historical derivation is uncertain.