Costco March 2025 Sale. I’ve highlighted some of the unadvertised deals for the month of march 2025 being offered at select costco locations, while supplies last. This costco sale calendar will allow you to save even more at the beloved warehouse retailer known for its affordable prices.

To take advantage of the deals, you must be a costco member. It’s also a good time to stock up on contact lens solution with biotrue on sale for $4.