Have you taken a look at the latest Google rankings for buy keywords??
If you run an eCommerce site or try to find any buy keywords to help rank your websites GOOD LUCK!!
It appears Google is reserving buy keywords for well established eCommerce sites like Amazon, eBay, Best Buy and many more. Who can compete against them.
Take a look at Buy Nikon Camera
Try this for any buy keyword, looks like this technique to get hungry buyers is out the window unless you can compete. Now to start thinking about new strategies with the latest Google Zoo updates.
Need some help with what keywords to choose, just leave a reply and a way to contact you and lets talk
Ed