As a seller I have been caught a couple fo times with postage labels. If I am not deligent when doing a postage label the ebay labels will automatically select SENDLE if that is the cheaper.  

Before I know it I have printed off a label for Sendle and not Aust Post.  It is then a pain to cancel the label which I have found I need to go to Sendle website and cancel I have not been able to do this on eBay. 

For me it is not about saving the odd $ dollar it is more not being diligent.