Check Amazon, AbeBooks, eBay, or local Facebook marketplace. Students who finish their course often sell their like-new books for 50% off. The DVD-Rom might be used, but the book works fine.
Many public libraries have ELT sections or inter-library loan programs. You can photocopy or scan one unit per week under "fair use" guidelines for personal study. new total english upper intermediate students book pdf
Open the PDF in Notability, GoodNotes, or Xodo (free on Android/Windows). Do not just read it. Write on it. Highlight passive structures. Underline unknown vocabulary. Check Amazon, AbeBooks, eBay, or local Facebook marketplace