I think prices are in bold (on the map) as long you did not view that listings, to distinguish them for listings already viewed. On a certain zoom level listings are displayed as selected by the Airbnb search algorithms.
Anyhow I looked for my listing with all the filters possible and its still nearly impossible to find. If I cant possible guests wont be able as well. Strange thing is when I publicated it I forgot to put cleaning fee and It was amazingly popular, I recieved lots of questions. Mabe the only way to be shown is to lower the price under the costs.