Something is wrong in Denmark…
the difference in price should be of the order of 20%, not double. Worth it… I don’t know, but you get a grind timer, a funky display and slightly larger burrs (55 mm rather than 50 mm). For £50 extra, the burrs are probably worth it; if you plan to single dose most or all of the time (and thus a grind timer is pointless), then the Mignon Zero is slightly cheaper than the Specialitá, but it has the same burrs.