Buying from Amazon using our links.

Contrary to what many advertise, nothing is free.  Someone somewhere is paying for the things people say are free.  Our website and the research costs are no different.  I pay for this out of my own pocket but when people use the links I put on these pages to buy from Amazon, Amazon gives us a tiny portion of their revenue helping us pay some of our costs.  It costs you nothing additional, if you go straight to Amazon or buy by clicking on one of our links you will pay the same, we only get revenue when you click and buy from one of our links.