When you list then make sure the Automatic relist box in not ticked
You can revise your items to untick it if it is on now
Or if you have no bids then just cancel the listings and put them on when you want too
Make sure there are no bids if cancelling as if there are bids then you would pay the final value fees
You can cancel buy going to the seller hub Active listings and choose the Edit box on the top right of the listings box that brings up End listing or End all listings
