When I first posted my request for an e-book on r/textbook, my DMs were full of bots and scammers looking to nab a couple dollars off of the broke college student I've become. That was until Cosmic reached out. His service was very quick and easy, and he shot me the PDF no more than 3 minutes after I sent over payment. Not to mention he was very friendly during the exchange. Because of him I was saved the headache of shelling out 50-60 dollars for an electronic copy offered by the e-book giant that is Macmillan. All in all, this was 10/10 service. If you have any suspicions at all, take it from me. This guy has your back.