I’m looking at Oslo duplexes priced from NOK 11,940,000 to NOK 17,910,000, and the active listings in my sample have been online for roughly 71 days. Vacancy seems to explain most of the longest-running examples, but I’m worried the sample is skewed toward properties that have not sold. Do recent completed sales show similar timing, or should I treat 71 days mainly as a measure of the stock still available?