My left knee has been giving me some trouble lately. The doctor told me: no yoga, no heels, no bending knee while sitting. Only one of those things is at all likely to happen. I did, however, decide that doc was, in effect, ordering me to shop for some flatter boots. (The day they gave me a brace which I hate and won't be wearing, I had on these.)
I clicked around for a bit and found these cool looking Timberland Flora boots on Amazon at a great price and I bought them. Then I googled the boot and found them on 6pm.com for even cheaper, so I canceled the Amazon transaction and bought them from 6pm. They're super comfortable and I love the look of them. In person they're a warm caramel color--good fall footwear. (They've since completely sold out on 6pm.)
Since I was so satisfied with these boots, I explored 6pm for other Timberland styles. There are a number of them that I dug, but very few were left in size 8.5--they've all gone of sale for $29.95 and seem to be moving fast. (I had a few pairs in my shopping cart for a couple of days and they went out of stock before I could snap them up.) I did find these rock star ankle boots. I couldn't decide on which color to get--the safe black or the wacky purple, so I got both. (They were cheap, fellow shoppers.)
Granted, these are not flat by a longshot, but they look like a steady wedge, they're cool, and I couldn't pass them up at the price.