Beth M, no the 90 days is generally for MAJOR electronics such as computers, TVs, iPads etc. Costco always states on receipt if the item is under a 90 day return period all my receipts for Ring products purchased from Costco do not state this. I had a Ring Doorbell 2 that I bought from Costco stop work after over one year. Went for an exchange and Costco REFUNDED my money. I then was free to either keep the refund or buy another one at either the price I paid or current selling price. Whichever was lower. I elected to buy another one.
Costco truly understands and values their customers. Costco takes care of their members when the manufacturers don’t. I am so happy that I bought the majority of my Ring products from Costco.