Himanshu Bhuyan

WooCommerce Minimum & Maximum Purchase Limit plugin gives you the ability to set up minimum and maximum purchase limit for your customers. If the customer cross the purchase limit or try to buy below minimum purchase limit , the plugin will show a custom warning message to your customers as well as you can also disable add to cart and checkout button if your customers try to buy outside of the limit you set .
WooCommerce Minimum & Maximum Purchase Limit plugin also gives you the ability to set up Purchase Restriction date so that you can keep the limit for a certain period . There is also option to setup limit for life time. You can also put purchase limit base on user role.
Fully tested with WooCommerce 2.6.9 .
<a href="http://codecanyon.net/item/woocommerce-minimum-maximum-purchase-limit/15023238" rel="nofollow ugc">Get Pro Version</a>
<a href="http://womaxmin.iitechnology.in/womaxmin-documentation/" rel="nofollow ugc">Documentation</a>

WooMaxMin for WooCommerce

WooCommerce Minimum & Maximum Purchase Limit plugin gives you the ability to set up minimum and maximum purchase limit for your customers.

Mihai Joldis

After adding a product to the cart the visitor is redirected to the Shopping Cart page automatically. 
You must have WP eCommerce Fancy purchase notifications enabled. 
Should be used only when you have products that do not use Stock.

WP eCommerce Checkout Redirect

After adding a product to the cart the visitor is redirected to the Shopping Cart page automatically.

WooMaxMin for WooCommerce vs WP eCommerce Checkout Redirect