Question about skimmer pump

[Oilers]

I just recently did a water change and when I plugged my skimmer back in, the skimmer pump started to make loud noises. I have a Vertex Alpha Cone 170 in-sump skimmer being used over a year or so. From what I read, the Red Dragon pumps are supposed to be excellent pumps and last a very long time. My question is if it's possible to have the pump repaired? Is it worth it or should I just buy a new pump? Which pump can I use instead of the Red Dragon pump? I guess that's more than one question