廉价优待 bargain offer

折价优惠 Discount

减价优待 bargain offer ; price-off

超低价优惠券 ultra-discounted tickets ; KT olleh

享受半价优惠 Half price ; enjoy half-price discount ; Enjoy half-price tickets are

减价优待券 coupons

价优化 Markdown Optimization

瑞士半价优惠卡 Swiss Half-Fare Card

半价优惠 Half-price tickets are ; Half-price discount

优质优价 higher quality; higher price ; high quality and high price