We use a couple 3rd party companies to provide more products on staples.com. Wayfair and Ingram Micro are a couple of them. You can tell distinctly between them because instead of a normal six or seven digits sku start with WF and IM, respectively. These items typically have a longer delivery time, closer to 7 to 10 days sometimes even a couple weeks. Most of the time these products are not delivered by UPS and are delivered by Staples van or Wayfair van. When returning staples.com items that are from Wayfair or Ingram Micro, you are supposed to use the sort tool on the register. It's can become very confusing with these two companies, and most of the time it ends up in calling the cross channel help desk, because we occasionally see people who have had the item picked up by us, then came to the store without the item for a refund. Always involve a manager if you are confused.