Can't understand lack of sales on my website

I have an ebay owned prostores site that does not generate sales. I think plenty of traffic but few sales. No where near what it should generate. Is there something wrong with the site?

My ebay store generates a lot of traffic and a bunch of sales. It's the same stuff. I'm offering lower prices in general on my prostores site.

It makes no sense. My site is plain looking but come on there should be sales!