It has a clean layout and the UI feels easy to use. Have you thought about including a side section that displays "Whatz Trending" or something like that that shows the top selling items over a given time period? And / Or if you can capture the data something that shows top sellars globally, nationally, locally? That would be cool. You have related items, what about related accessories? Finally user ratings / comments asscoicated with each product would be sweet and very beneficial to other shoppers.
Are the products displayed indicative of the products you will sell?