1) I use this over residential carpet & pad. One of these usually last about 6-7 months with daily use. 2) If I remember correctly this used to be [$] regular price.3) "You get what you pay for."
Better not to use these on thick carpet.I have med size rolling office chairs and using this matt over thick carpet isn't as easy as I expected. It's O.k. but there is drag. It's not unbareable and I'm not distracted enough to ditch the two I purchased and get two higher end ones yet. These are just O.k. I paid [$] on sale for each. If I could go back in time I would've sprung for the $40 ones. But until these die I'm not going to do anything.