Books offer an outstanding wealth of learning at a much cheaper price than taking a course.

书籍能提供非常丰富的知识，而且价格比上一门课要便宜得多。

youdao

Books are cheaper in electronic format, but not all.

电子书是会便宜一些，但不能一概而论。

youdao

Prices for other books vary widely, but are generally cheaper than the paper versions.

其它种类的电子书价格相差很大，但通常都比纸质书便宜。

youdao

It's always a little bit cheaper. So, the same thing with e-books.

总是便宜一点。所以，对于电子书也是一样。

音乐市场的变化 - SpeakingMax英语口语达人

E-books are quite cheaper online than hardcopy books so,

在线电子书比纸质书便宜不少，

音乐市场的变化 - SpeakingMax英语口语达人

As for e-book sales, Amazon did say earlier this summer that it sells 143 e-books for every 100 hardcover books (Of course, e-books are much cheaper than hardcover).

FORBES: Majority Of Adults Not Into E-Readers?

Apparently he had dropped his cellphone in the bowl (another reason that books make better, cheaper companions on the throne), made the decision to do the unthinkable, and hopefully rolled up his sleeve for his unfortunate fishing expedition.

ENGADGET: Student trapped in toilet after fishing for cellphone

Electronic books are smaller, cheaper and simpler than laptop computers but give users the ability to create original text, graphics and audio and import encrypted electronic files from third-party providers, according to Eric Walusis, president of Dayton-based Searchlight eBook Training Inc.

CNN: Dayton electronic book classroom pilot to begin Sept. 1