QuiltE, I checked on Amazon for anti-fatigue floor mats and then narrowed the choice down to reviews of 4 stars and better for you. There are some for less than $40 with good reviews. Read the reviews on the site by scrolling to the bottom of the page for the individual mat you are interested in; I think that will help you narrow down your decision.
https://www.amazon.com/s/ref=sr_nr_p...nid=2661617011
Jan in VA, who has gotten to the point that I can no longer live without Amazon reviews before buying!