"How often are you getting evolution items?"

#PokemonGO: How often are you all receiving evolution items? I've gotten 1x (dragon scale) since they came out, spinning >16 unique pokestops 2x/day. I have been spinning the same stops on my commute to and from work.Do they only come from certain Pokestops or are they simply really rare?*edit: 16, not 10. Still very few Pokestops. via /r/pokemongo http://ift.tt/2md3v6e