I Need Money ASAP! (please)

Hello everyone. I am a 16 years old boy from the UK I live in London. I am really desperate for money right now. My last GCSE's exams are on the way. So i was on the internet browsing and i found something that i would really love to buy it's a book that has useful quotes that i need for the exam. I am struggling to buy it. My parents are currently away as they can't purchase it for me and my grandparents don't have a credit card or debt card as they are too old to be having one. So am asking very politely, can someone please donate, all i want is £5 ($7).Thank you so much for reading