FYI for Canadians, Costco.ca has 3D Maxpider mats, including for Model 3, available for $160, which is $40 off. I ordered on Monday and they were delivered today. They're returnable to Costco stores.
https://www.costco.ca/3D-MAXpider-Mat-Custom-fit-All-weather-Car-Mats.product.10367254.html
https://www.costco.ca/3D-MAXpider-Mat-Custom-fit-All-weather-Car-Mats.product.10367254.html