I got in touch with U-Guard, the Canadian distributor for the 3DMAXPIDER custom fit floor liners who sells their floor liners through Costco's website, and they said:
I have used their mats before and I think they are quite good, I haven't used the weathertech ones so I cannot say how they differ. Historically they have always been cheaper than the weathertech offerings.
K
Thanks for your message. We currently do not have stock for Tesla Model 3 mats, but we are expecting a shipment for it by early to mid September, it will be listed on Costco website once available.
Thank you for choosing U-Guard,
U-Guard Customer Service Support
Thank you for choosing U-Guard,
U-Guard Customer Service Support
I have used their mats before and I think they are quite good, I haven't used the weathertech ones so I cannot say how they differ. Historically they have always been cheaper than the weathertech offerings.
K