Searched for Streams of Silver and got a higher priced book as a return than what was available on the site recommended. Seems that was because of the cost of shipping. Though it was only 0.01 more than what was recommended and didn't appear on the results.

Recommended: $4.58 https://www.abebooks.com/servlet/BookDetailsPL?bi=3131841312...

Found: $2.50 + $2.00 shipping https://www.abebooks.com/servlet/BookDetailsPL?bi=3119792159...

Not sure how to takes shipping into account; but really solid results so far!