contemporary guitars or vintage? My teacher, Wulfin Lieske, plays the real Torres "La Leona", which is worth estimated 400 000 Euro, if the owner, a German collector, should ever decide to part with her. Hauser I and II as well as Robert Bouchet are very expensive as well. As to Ervin Somogyi, I think Jeffrey Elliot is in the same league. Matthias Dammann (who closed his list) asked around 20 000 Euro, new Gernot Wagner guitars go for 15 000 to 17 000 Euro. There are many more luthier asking five-figure amounts for their instruments.
Giovanni Tacchi, Bouchet model, spruce/BRAZ, 2018
Giovanni Tacchi, Daniel Friederich copy, cedar/EIR, 2017