I have made the mistake of buying a watch without trying them on, regretted and sold it at a loss. It looked really nice in pictures and on somebody's wrist but once it was delivered to me, and i wore it on my wrist, it didnt look good on me. It is still a nice watch, but just not for me.
So lesson learnt, never buy a watch unless I can try it on. I'm sure its a nice watch.