Just making this post since Bruin One Access is once again getting pushed hard by the school, trying to make the $129 appear as a good deal. Chances are, most of your textbooks will be easy to find on libgen. And even if you have one or two that aren't, chances are your one or two course readers/textbooks will cost less than $129, especially if you're renting online or buying used. I've also had some classes where there was an assigned textbook but all the info you actually needed to do well was in the lecture notes.

There may be some exceptions, such as if all your textbooks just happen to not be on libgen or similar sites, or if you have some strong moral conviction against piracy. But for the vast majority of students, it seems pretty clear that Bruin One Access is neither necessary nor a good deal.