I bought it from Großräschener Orchideen in Germany. Immediatelly after that, they took the species out of the cataloge. I finally received the plant last week but am not happy with the quality of it. I have complainned but the team at Großräschener Orchideen ignores my messages. So, I would never buy again from them (6 plants ordered: one in terrible conditions, 3 very stressed, and 2 of good quality).
Currently I am trying to save the Dryadella: gave it a 10 hours bath with rooting hormones solution, and have it growing on living sphagnum moss under intermediate to coll conditions. Let's see if it survive and start growing... so, people in OB, cross your fingers for my little dwarf Drydella!