Depends on whether the cover you purchased is a standard size or not. For example, a Crate and Barrel queen size duvet cover is a different dimension than a Restoration Hardware queen size duvet cover, and you cannot buy the correct size insert for either at Macy's. I would google bu the dimensions and hopefully that will help narrow it down. If it's a more common size, I do love going to Home Goods or TJ Maxx and just picking up one. I've truly never noticed the price point as long as I am warm
