Can I duplicate certain repricer rules?

Yes, you can copy and paste the repricer rules. This is especially useful when you want to use a similar rule, and perhaps make a small modification. 

To duplicate a repricer rule, go to the overview of your repricer rules. You do this by choosing 'prices' in the menu on the left, and then 'repricer'. 

On the following page, you can click the duplicate icon to duplicate a repricer rule.