You have probably compare a multitude of ways to get ASINs on Amazon. Did you find the asin lookup tool that gets the job done? You found it today, pickasin 1.6.1 : Better URL support 1.5.9 : Ability to choose the delimiter at export 1.5.8 : Donate link update 1.5.5 : GP url support 1.5.4 : Minor bugs fixed 1.5 : Default options updated 1.4 : Ability to turn extension on/off via option panel 1.3 : Survey added, your opinion matters!