I wear a 9 1/2 to an 11, it varies wildly depending on the shoe..
I also think I have flat feet.
I love wedges, wedge sandals for the summer, but it's hard for me to wear them. after an hour my feet at impossible - it sucks ! i hate wearing socks so I hate tennis shoes. so I've had this dingy pair of sandals for years ( flip flops ) that fit and are comfy. I hate them.
I got an adorable pair of boots for Christmas a few years ago that I will only put on if I know I'm sitting down right after. the are mid-calf high, tan, and the heel really isn't that extreamly but they KILL me. even when I stuffed them with cousins
I got a pair of ankle wedge boots I can wear though ! they are also adorable and dark brown. I thought since these worked for me I could wear wedge sandals (love) but no, I had to return the ones I got recently. I exchanged them for another summer sandal that has a very tiny heel. I don't like them nearly as much but as less they are cute / fancy and not my old dingy ones.
Sigh. I hope it's a weight thing and maybe I could wear heels later..