hifi engine

Brand New Panasonic ST2800L and SU2800L! Rare or Common? Please advise

Hi,

We have just found brand new unopened Panasonic St2800L (Radio Tuner) and SU2800L (Amplifier). Is it rare to have these brand new in the box??

Please if anyone could advise i would be grateful as i do not have much knowledge on hifi equipment!

Thanks
Craig