If you want to update your Repricing rules in bulk, you can either do this on-screen via the 'My Inventory' screen or by using imports.
To apply bulk changes to your products on the 'My Inventory' screen, tick the boxes to the left of the products you wish to make changes to and then click 'Bulk Edit Products' on the top right.
From the dropdown menu, select 'Set Pricing Rule', choose your channel and the rule you wish to apply to these products (view the process in the video below).
Please note: You can change your display preferences to 1000, allowing you to update up to 1000 products at a time.
Our Youtube channel also provides a video guide.