There are a few CP titles that are really struggling simply because the first price that's put in for them tends to be the one that everyone else puts in. Thus Winer's A Treatise on the Grammar of New Testament Greek is stuck of a measley $4.
http://www.logos.com/product/8555/a-treatise-on-the-grammar-of-new-testament-greek
Do you realize that back when this book was on pre-pub for $24, it was sitting at 65% and now its sitting at ~65% for $4???Just imagine the massive number of orders this book has at $4 than it ever had at $24! And if everyone raised their bid to $6, this book would easily shoot up close to, if not above, 100%. And FYI, this is an incredibly important Greek grammar.
Also perhaps you could consider raising your bids on a couple other titles as well:
http://www.logos.com/product/8510/samuel-prideaux-tregelles-collection
http://www.logos.com/product/8534/georg-curtius-greek-studies-collection