JMS quantity related price for Virtuemart plugin allows you to set different prices for each quantity of product in category or special product.
Demo link :
http://demo25.joommasters.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=5&virtuemart_category_id=1 (http://demo25.joommasters.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=5&virtuemart_category_id=1)
Download link :
http://www.joommasters.com/index.php/joomla/joomla-plugins?view=document&doc_id=21 (http://www.joommasters.com/index.php/joomla/joomla-plugins?view=document&doc_id=21)
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