Price Change Alerts and Cost of Living History

I’m not sure how often the data updates, particularly for hotels, but it would be cool to see how the price of a location changes over time, maybe week by week for a nomad. For places like Da Nang this would probably be quite interesting to see over time, but it would also be good because in light of world events or other things prices in certain locations may change quickly, but it isn’t clear if that is reflected in the data.