Does anyone know of a ticket broker / reseller in Copenhagen? I'm referring to an agency or office that resells tickets at a markup, not a standard box office agency (either traditional or online) - for example, I am aware of billetnet.dk...

I'm specifically looking for a ticket to a performance at the new opera house (Holmen) in March. The box office and billetnet.dk are sold out.

Many thanks for any information provided.