First I will start with few pairs of shoes that I miss dearly and should have never sold them.

what was I thinking selling these and only 40 $, well we learn from our mistakes, if a shoe fits and you love it DO NOT SELL

Those cute espadrilles sold for 15$...really? shame

Those were a tad too big but I should have tried to wear maybe at least once.
Amazing pair

These I can't stop thinking about but they were a size too small. I sold them for 25$...Imagine that.