On routes where deluxe sleepers exist, they are usually the last of the sleepers to sell out due to high price. Most Chinese willing to pay this sort of price would opt for flight instead. This means that except at holiday times, deluxe soft sleepers are more likely to be available at last minute or 1-2 days before travel, compared to regular soft sleepers or hard sleepers. Usually 3-5 days ahead is fairly reliable to snag a deluxe soft.