price "From $____"

I am using the theme clean sale with woo commerce. Under each catagory the products are listed saying “from $____” and lists the lowest price available. becasue my products have variable attributes and range in price from $50 to $500, I want to hide this advertisement. I would prefer a price not to show up until they have selected the variables. How may I do this?

http://69.195.124.83/~friedmb2/product-category/seashells/

http://ww.wp.xz.cn/extend/plugins/woocommerce/