Some textbooks have an OWL code that lets you do online prep. Is it worth buying the code, because it amounts to 126 dollars for just 6 months. There are alot of worksheets and videos online, so I don’t think I’ll be needing OWL; it’s also not required for the chem course I’m going to take (Chem 2150), but it’s listed as “optional”. Anyone think OWL is worth the 120-130 dollars?