Seriously man? How much did you spend on a xbow or how much is an ethical shot worth to you. Just don't see how $25 would influence your decision to purchase a cocking rope when the price of everything else is much higher and the difference of just a 1/4" in the cocking of your string at 20 yds means it will shoot 4" off. Not to mention the safety factor involved for your own personal well being. Anyhow good luck to you and be safe.