http://bucks.blogs.nytimes.com/2013/02/19/new-comparison-sho...


DugDug is a new price comparison site that aims to provide pet product information from multiple online retailers in a clear, easily understandable format...

A search on DugDug, for instance, for Advantix, a killer of canine fleas and ticks, returns a menu of options, based on the pet’s weight. When you click on the proper weight (11-20 pounds, say), an appropriate list of vendors and prices appears.

DugDug also includes any coupons next to each item. That way, users can receive the discount when buying the item, rather than having to scour the Web for potentially available coupon codes... [end quote]

http://www.dugdug.com/

I searched on "Frontline." DugDug returned Frontline, Advantix and Trifexis, with all their prices (showing the list price and lowest price). Clicking again returned a page of different types of flea control products.

This appears to be a very useful source.
Wendy