Question about product page layout and side menu on website?

[Jake]

It could go either way, depending on the est of the page layout, one bigger issue you might consider is how your pages look on small mobile browsers, where a simplified view makes more sense, there are "responsive" site layouts that automatically adjust the layout to fit the browser window, it could for example rearrange your 2 columns of products to just one tall one.

While you probably don't get as many on the go shoppers as a retail site, there is a trend toward an increased number of views from mobile devices. Your site log files or tracking utility can identify the browser and device that your visitors are using.

Here's a tool that previews your site on different screens
http://responsivly.com/