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(very) cheap; (very) inexpensive; cut-price; bargain (price)
格安の航空券を見つけて旅行に出た。
I found a cheap air ticket and went on a trip.
格安スマホの人気が高まっている。
The popularity of budget smartphones is rising.
格安で質の良い品を扱う店が増えた。
Shops selling good quality goods at bargain prices have increased.