Hi Kayle,
There's some CSS on your site that is setting the width of the ul.products li.product elements to width: 55%.
http://cld.wthms.co/ITc2
If you change this to 20% they look better.
You could add this CSS to your Function custom css area to adjust this page:
.postid-2835 ul.products li.product {
width: 20%;
}