Replace bearings or buy new motor?

My pump has screamed at me for two years now and I think it is very near the end.

Which do you guys recommend? Waterway pump (not sure; guessing motor is century, will check when it's not raining). I found a site that sells the bearings for under $20 which is obviously much less than a new motor.

BUT, how hard is it to replace the bearings?

If things aren't rusted it should be an easy fix. May have to get a small bearing puller. Any good tool department should have something. If things are rusted then you may have trouble especially the front one which is behind the fan. Can't really put much force on that without breaking it.
Al