Anything from 120(really cheap so would be careful) to 200. It depends on the size. There an element of quantum firm too, A firm that charges €200 a unit for normal sized block might charge considerably less than 200 a unit fee for a massive block for 500 plus units.
There used to be a of of loss leading with some firms taking very cheap fees at sum 120 a unit but taking cheeky kickbacks elsewhere. Quite a few of these guys have been found out and left the market.
Small developments of 6 to 12 units it might be more than 200 as although the block is smaller there still a of of work to be done.
Level of work is a factor too when renewing. A very difficult Board of Directors may encourage an agent to push for considerably higher fees on renewal to make a contract worth keeping.