Couldn't create range_filter for search index(commerce price)
There is an opened issue for the module contextual_range_filter with search_api and the patch patch-contextual-range-filter-search-api.txt will make the range filter work with views based on search api though you could use it for a resource for services.

Another way of achieving that scenario is to use search_api_ranges but it won't be controlled by services module.

Hope that helps with your case.