[Plugin: WooCommerce – excelling eCommerce] Checkout With Dynamic Pricing And Selective Quantity Hel

Is there a way to make a set number of drop down quantities to select from instead of being able to choose your own? For Example http://sixcentpress.com/products/ has it to where they select a product, it gives you a drop down choice of no lower than 10, and then dynamically prices the product based on how many of the item there is, now I have the dynamic pricing extension for woocommerce and the gravity forms product add on if that helps. I am trying to integrate them but just can not figure out what I am missing or if I might not even need either of them. Any help would be awesome. Thanks guys!

http://wordpress.org/extend/plugins/woocommerce/