Keep with it - the hub will run rough, but you'll get away with it for a fair bit. Just look after it.
Now if it was your super duper steed, then new hub/wheel/wheelset...
My commuter has this issue on the rear hub, but I've got away with it by using some spare ball bearings and a spare (used) cone - it runs slightly rough, but it will do until the rim wears out - the front isn't too great either... but a regular re-grease will help.
Had this been on my 'best bike' then a new wheelset it might be !