Market Press Buy Now button lines all the way to the right

Why is it on this blog: http://stephaniesglass.artistsspot.com/ the buy now button lines up correctly but on the main blog: http://artistsspot.com/ the buy now button lines up way to the right?

Both are using the exact same theme with the main blog using the multisite widget [mp_list_global_products paginate="true" page="1" order_by="price" order="DESC" thumbnail_size="250"] and the sub-blog using the following code [mp_list_products paginate="true" page="1" per_page="20" order_by="price" order="DESC" content="excerpt"] plus the default thumbnail on the main blog is smaller than on the sub-blog. Thanks for your help.