Course Textbook Rentals Site for University Students
A single site that lets you list which books you need for your course and puts you in touch with people just finishing the course in your university. They drop the books off, and you pay them. The students union could organise this if they want to help students.
There’s this, but yep, an app your uni recommends would allow all colleges and unis to offer the service to students. The costs of new books are silly tbh and you only use them once, if at all.
Newcastle Uni has a programme for this, but there should be a site or app where you just list your course and it finds the cheapest version of each second-hand book you will need.