Nice site, love the chick.
But already been said, lack of content and mainly a kettlebell, who the fuck buys that at that price on a shop? You can buy kettlebell's everywhere!
Also you have zero marketing tricks, all look static, you need a on sale page and few items need the from $34,99 for $24,99, stuff like that.
I'm looking at it from my phone, put a home button in the menu.
Also, where are your social media profiles? You need at least, facebook, instagram, twitter and pinterest and you need to make those pages nice and start posting daily although that will be hard with such few items.
Join niche related groups on fb, target niche related people on Twitter and instagram, target niche related boards on pinterest. Etc etc.
Making a nice website, a few ads won't make your website successful, you will need to invest a LOT more energy into it.