I had to make a trip to Costco today and DSW is right next door so I popped in and found these on clearance for $18! Low heel, very wide toebox. Not a lot of padding but an insole should do the trick. If you don't like synthetic leather they might not be for you but I couldn't even tell when I put them on.

http://www.dsw.com/dsw_shoes/c.....dId=187931 (they don't have the yellow online)

http://img.photobucket.com/alb.....G_2325.jpg (excuse the embarrassingly spotty mirror)

Dunno how they will feel in 8 hours but for $18 I'm willing to find out. The description says they are 2.5" high but they are definitely 2". 2.5" is if you measure on the angle.

I also tried on the Blowfish Willis booties Agrace was torn over for a while and loved them. Very comfy and cute, no center of balance issues for me. I would have snapped them up if I could and they are on my wish list.