RavendDB faceted search results formatting

Question

Currently I'm playing with faceted search after reading RavenDB doc about it.

The result returned is OK, but there's a small problem. Since the result comes as

IDictionary<string, IEnumerable<FacetValue>>

it's necessary to iterate over it and do some fancy string manipulation to format the result and show it in a PartialView. More specifically this facet:

new Facet
    {
        Name = "Value_Range",
        Mode = FacetMode.Ranges,
        Ranges =
            {
                "[NULL TO Dx500.0]",
                "[Dx500.0 TO Dx1000.0]",
                "[Dx1000.0 TO Dx2500.0]",
                "[Dx2500.0 TO Dx5000.0]",
                "[Dx5000.0 TO NULL]",
            }
    } 

View code:

@fv.Range

This is this "beautiful" string that gets output on the view: [Dx400.0 TO Dx600.0]

RavenDB uses the Dx prefix above to do a number to string conversion.

Controller code where the facet result is passed to a specific ViewModel:

var facetResults = DocumentSession.Query<Realty>("RealtyFacets")
            //.Where(x => x.Value >= 100 && x.Value <= 1000)
            .ToFacets("facets/RealtyFacets").ToArray();

var model = new RealtyFacetsViewModel();

model.Cities = facetResults[0];
model.Purposes = facetResults[1];
model.Types = facetResults[2];
model.Values = facetResults[3];

return PartialView("RealtyFacets", model);

Is there any other/better way of getting results from a faceted search so that no string manipulation must be done to format the returned data?

After Ayende's suggestion, I did this in my controller:

foreach (var val in facetResults[3].Value)
{
    switch(val.Range)
    {
        case "[Dx0.0 TO Dx200.0]":
            val.Range = string.Format("{0:C2} {1} {2:C2}",
                                        0, @Localization.to, 200);
            break;
        case "[Dx200.0 TO Dx400.0]":
            val.Range = string.Format("{0:C2} {1} {2:C2}",
                                        200, @Localization.to, 400);
            break;
        case "[Dx400.0 TO Dx600.0]":
            val.Range = string.Format("{0:C2} {1} {2:C2}",
                                        400, @Localization.to, 600);
            break;
        case "[Dx600.0 TO Dx800.0]":
            val.Range = string.Format("{0:C2} {1} {2:C2}",
                                        600, @Localization.to, 800);
            break;
        case "[Dx800.0 TO Dx1000000.0]":
            val.Range = string.Format("{0:C2} {1} {2:C2}",
                                        800, @Localization.to, 1000000);
            break;
    }
}

model.Values = facetResults[3];