There are several 2-way monitors that cost a lot more than the $7000.00 Dynaudio C1.My answer to your question (strictly my opinion,nothing more) is...because Dynaudio thinks they are worth it and they feel pretty confident that some folks will pay that amount.If they didn't believe these two things then they would have a different price.
Dynaudio C1, why so expensive?
Any explanation for the price on these? They are, after all, a 2 way monitor.