Only free until you grow it... If you can try them out for cheap outdoors, I would try them, otherwise I would not bother unless you have a really good idea about who the dad was, and if the pollen was from herming, I would forget it. Crap shoot genetics are not worth an expensive grow in my opinion, and continuing with a strain that hermed is a crime against the grow hobby. Even a ten or more bucks a seed, buying good genetics makes more sense for indoor efforts to this stoner.
Good luck with it either way.