If you are going to do than do it. Why would you post a message about it on the internet? What if shit goes wrong and you kill him? There is the evidence right there. You get absolutley no benifit to posting about it online whatsover, except you get a reaction from people, the whole "no dont do it". You sound 12 years old, i paid for a half o and got 3 grams. So what if you didnt have a scale, you dont need 1, you need the testicles to say "no, not enough". Who held a gun to your head and made you buy it? Prob a made up story for web drama shit anyway.
i am glad he ripped you off, you sound like a punk