Because of the mixed reviews on various sites regarding comfort and sizing, I ordered from Amazon a size 8.5, 9 and 9.5.  I normally wear 8.5 or nine depending on the designer and shoe style.
9.5, comfortable but way too big.
9.0, uncomfortable but with a snug fit.  I wobbled when I walked and I've been wearing high heels for 20 years.
8.5, uncomfortable, toe box not large enough.

I searched for a platform heel like this and waited for the price to go down.  I paid $52 for the 9.5 (black leather) and ONLY $35 for the 9 and 8.5 (black patent).  How I wish one pair would have fit comfortably because the black leather was banging quality in person.

Hope this helps!