walk-up price
noun [ C ] uk/ˈwɔːk.ʌp ˌpraɪs/ us/ˈwɑːk.ʌp ˌpraɪs/
临时购买…的价格
the price you pay for something such as a ticket if you buy it just before using it, rather than buying it some time earlier
Tickets booked online for the same day will be charged at the full walk-up price. 当天网上订购的票价为全价，跟临时购买的价格一样。