For the series....
How lazy can you get? LOL
I've never purchased on Amazon directly, I always have hard times figuring out what the shipping costs are and how it works amazon or non-amazon suipplied etc, amazon here also have a quite poor offer, listings are put in a weird way it's really bad structured as a website, primitive and uncomfortable layout for me.....too bad cuz I'm sick and tired of ebay, but amazon is just too bad developped and it makes me lose a lot of time contacting assistance to figure out the shipping costs, if will do intl shipping, if not and other things. Ebay is just more immediate and everything is smoother and more comfortable....
As for the button, I don't meet often folks who buy the same thing over and over, and those who buy online often is for saving matters only, at least here, as prices vary and you may have new cheaper offerings I wouldn't want to stick to the same seller or same price forever....