Buying Sefaira separately for Revit/Sketchup?

I’m just wondering if I purchase Sketchup, does that include Sefaira or do I buy it separately as a plug-in? Or would Sefaira be free as a plug-in and that I’d just have to buy Sketchup?

Sefaira is not included with SketchUp and it is not a free “plug-in”. Contact them here for pricing.