Check the online store for the bearing HERE as the cost is not expensive. Yes I think it is worth repairing as all you need to do to replace the bearing is place the new bearing against the old one in a vice as well as a piece of tube or socket and then close the vice.
No special tool apart from a vice which most people have.
Regards,
Bruce
Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.