If you are taking BIO 141 through NVCC...definitely check the NVCC bookstores (find out which campus the ELI courses are linked to--maybe Annandale?) to find out exactly what books you need--and then search Amazon
for those ISBN numbers.
I vaguely remember that I bought the actual Textbook via Amazon for a much better price than what was sold in our book store. Often you can get a used copy that someone never even opened (they dropped class). I bought a new book simply b/c I knew I'd keep it for a long while (since I'm just starting nursing). But I know that I paid LESS THAN the new price on the NVCC bookstore site.
Also DEFINITELY buy the Study Guide that NVCC recommends. It is the ONLY way you'll survive the class. CRITICAL! Doubtful many used copies are available. I was glad to have a new copy.
You will want the chemistry book they recommend. I'm keeping mine for future reference.
The Lab workbook/CDs are interesting, but not anything you'll be graded on and not used for tests...so if you can get used copy--do that.
I never bought the wall chart.
Hope this is helpful.