I am looking for good alternatives of adwords which can operate and turn well in eCommerce niche.
The most favorable alternative to adwords will always be Bing. But if you are promoting products from Ecommerce nich then why don't you choose any affiliate network??
There are the best alternatives to Google Adwords Like eLeavers , Studads , Adspact. These are the best and cheapest PPC advertising networks. You can advertise your ad campaign on the best PPC adnetwork eLeavers.com Alternative To Google Adwords.
Media.net is the best alternative.