This just amazed me........My husband needs a 4 wheel walker for 3 months while he recovers from back surgery. The rehab center ordered one for him and I received a call this afternoon from the supplier. Apparently 4 wheel walkers, with the large wheels, and sturdy enough for a 6' 180lb man have more features than medicare will cover.....so after medicare paid their 80% of their cost, and supplement paid 20% there was a balance due for the extra accessories that are of course, not removable. They wanted $85 dollars. So I get the make and model number of the walker.....go to Amazon.com, and I can buy that same walker for $64....out the door, free delivery, no tax. I find this outrageous. Maybe Medicare should start buying on Amazon.