2008 Nissan Sentra Tabs Changing Radio Stations Time On Clock Fallen Off

the tabs for changing radio stations,and changing the time on the clock have fallen off. when trying to reattach they keep coming off. took it to the dealer and they say the whole unit has to be replaced at a cost of $380. they don't sell individual tabs. this seems rather silly that a whole unit has to be repalced instead of attaching new tabs.