If a keyword that has been created in adCore is then manually edited or added in AdWords or the AdWords Editor, adCore will not know to insert the dynamic price parameter, hence the reason why the keyword is not displaying price.
A workaround for this is by creating additional keywords under the Keywords' Synonym section in the Campaign Builder. This feature allows you to create additional keywords that are not in your feed and all those created within this section will contain the dynamic price parameter. To do so, enter your keyword and the variation separated by a semi-colon.
Hotel, Hotels, Motel will all trigger the same ad.