add to cart - multiple products at once
Commerce Add to Cart Extras


  This module provides alternative ways of adding products to cart.
  
  The initial version provides a views field handler ("Commerce Product:
  Quantity input field") that relies on the Views Form API (a part of
  Views 3 since RC1) to output a quantity textfield that turns the view
  into an add to cart form. The default quantity can be configured, and
  only products with a quantity larger than 0 are added to the cart.