I created my own customized bookmarklet that opens two windows (or tabs), one for my local library and one with a price search using AddAll (AddAll & APL Bookmarklet). It’s probably not useful to anyone but me, but it could easily be customized to search other libraries.

Also on the subjects of libraries, I recommend reading a PC Magazine article titled Your Library Online, about online library resources. I regularly use the library databases to read magazine articles online, especially when there is one article that interests me in a magazine that I wouldn’t otherwise buy.

Also, consider donating some of the money you save to help your local library, many of which are struggling lately.