The rounded corners on the main search box are a little bit "hard", try to make them smoother.
Also try centering the word "Search" in the button, it appears on the bottom of the button.
Friends please review Shopping search engine of my friend Online Products Search Engine || Shopping Snooper which just launch for best shopping of holiday seasons.
Requesting you to suggest the new features to incorporated to make it the best shopping search engine.
Thanx in advance.