You never inform us beforehand that will adjust the price. If you adjust the price up now. We can't increase the price to customers now, and must bear the loss.
You never told us before the price rise. If you hike up now. We must be able to raise prices to customers at this time. And be responsible for its own losses.
You never informed us that the price increase. If you adjust the price up to now. We must not raise prices with customers now. And have to bear the loss of it.