deep-discount
/ˈdiːpdɪskaʊnt/adjective
1- denoting financial securities carrying a low rate of interest relative to prevailing market rates and issued at a discount to their redemption value, so mainly providing capital gain rather than income（金融证券）大折价的。
1.1
- N. Amer. heavily discounted; greatly reduced in price〈北美〉大打折扣, 大减价：
deep-discount pricing has kept air fares affordable.
大幅折扣让人们坐得起飞机。