If that were to happen again it could dent a retailers’ ability to sell the product in future months at the usual price, Blue Yonder said.
Shoppers have also honed their strategies in the five years since British retailers adopted the one-off deals day tradition from their US counterparts, according to the survey.
Over a fifth say they will plan in advance to work out where the product is located on shelves, 17% will hunt down items in a team and 21% will be waking up early to get as close to the front of queues as possible.