Sicce Syncra Silent 2.0 Impeller

[LJLKRL05]

I have a Sicce Syncra Silent 2.0 that I have had in constant use for probably 5 years. Yesterday I noticed it was not running. I took it apart and discovered the magnet on the shaft had swollen and would not turn in the pump anymore.
What are the chances I just need a new impeller shaft for this pump? They are about $30 or so and a new pump is about $90.
Has anyone had success just changing the impeller shaft on a pump like this? I know it happens to other brands too.

 

[Sleepydoc]

I don’t know this pump specifically, but in general it’s quite easy to change an impeller and I’d be willing to bet it would work as good as new.

 

[Blue Spot Octopus]

Also put your finger in the hole of the pump to feel if there is any damage to the pump as well, I would not have it plugged in as well.