I bought a 20 pack of microfibers at Costco and they work great!!! People complain that they leave lint on the car but I didn't notice anything being left that wouldn't fly away the first time I got the car up to 40 mph... $9 is a great deal. I think the other places are a rip off for the weekend detailer. I seriously cannot tell the difference between the expensive microfibers I used before the Costco ones.