Exactly what does "range" mean in "to range the bride costume"?
The article refers to Kmart removing the costume after a petition was signed to have it removed. Kmart is saying they're sorry to have included it in their range of products they carry.
I, too, cannot find a reference to this particular use of the verb range. Even behind the paywall Macquarie's Dictionary of Australian English doesn't have it. However, I read the article and it's clear from context.