I have owned Capezio's and did not find them as bad as you all say. I did find the heel was not centered just quite right and fell apart quickly so I would not purchase again but I would not throw them away either...
But as far as selling the shoes you are going to have a problem with that and not get nearly what you paid for them. The one time I purchased a shoe I just could not wear I donated them to a college ballroom team.
I do the oppostie when breaking in a shoe. I wear a practice shoe for my lessons, which are a hour and a half and the heels go on for practice sessions.... I dont want to be distracted at all in a lesson.
There are tons of on line sites to buy shoes so you do not have to be limited to just buying Capezios. I buy my shoes online at BackBay.