If you intend on buying a pair of shoes that last ten minutes or you don't plan on actually walking in these shoes then it might be the right decision for you to get the cheaper pair or the pair that are 6 inches. There's a reason why all shoes are not made the same but it's up to you to select the right pair.
FASHION TIP: If you're the shopper that likes the tall look but hates the pain, invest in a pair that have the platform soles. They look like they would be incredibly painful to wear but are actually quite comfortable for the most part. This is because the platform allows the front of your foot to have a better alignment with the heel, allowing the heel to feel shorter on your feet.