There is a wide range of guitar available. Regular, professional, cheap, high-end, etc. Even the size, yes, guitars are different from each other when it comes to style, sound, quality, and even size. If you are looking for a specific guitar, order one online. You would be able to find what you are looking for online that would fit in your style and size (example: you got short fingers).
You would not be able to always find what you want on a physical store.