Google Experiment to Show Hotel Prices on Google Maps
Google started experimenting with a new feature, visible to a small portion of users, to help make that process even easier by showing specific prices for selected hotel listings.
This new feature will not change the way that hotels are ranked in Google Maps. Google Maps ranks business listings based on their relevance to the search terms entered, along with geographic distance (where indicated) and other factors, regardless of whether there is an associated price.
More info on Google's blog.