Net1Distributing via Amazon offers Prime members the EkoBrew Reusable Single-Cup Plastic Coffee Filter 2-Pack for $10 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $5.14.) That's $3 below our November mention and the lowest total price we could find by $11. These BPA-free plastic coffee filters feature heat-resistant side-mount grips and silicone O-rings.

Also available is the EkoBrew Reusable Single-Cup Stainless Steel Coffee Filter 2-Pack for $18 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, it adds $5.22.) That's $2 below our November mention and the lowest total price we could find by $10.