I have 2 fixed rate mortgage with First Active at 5% , I contacted them to find out what penalty I would have to pay to exit redeem both mortgages. They immediately quoted me 6 months interest for a redemption penalty which equates to 12000€ in total. Based on advice I received here I then asked her to forward to me my contract details highlighting where exactly it states that I must pay 6 months penalty. 3 days later I received an update from the bank stating that they "reviewed" the case and waivered the penalty. They also never forwarded me the contract details stating I would have to pay 6 months interest for each mortgage.
Interesting, I wonder is the 6 month thing pulled out of a hat and because I queried the contract they backed off. Perhaps your quote is plucked from the sky too and really is open for negotiation as clubman mentioned