a single gram of heroin is about 200$ in the states, cheaper in cities
not sure about fentanyl
i think about a quarter of that is near lethal, but 1 gram of even half cut heroin is enough to fuck your shit sideways to pluto, gg no re
At those doses, you can snort it, mix it with food/water and consume it, shove it up your ass (sounds dumb but it would work very well), or of course inject it.
Injection of a full gram of heroin might be a bit difficult, so try half at once, then about 20 seconds later after the second is liquid, do the other half.
Basically see where doctors take your blood, in the inside of your elbow. Find a larger vein there, push in heorin-filled needle at about a 45 degree angle. Make sure there is no air in the needle, and inject right into the vein.
If you want to test if you;re in the vein, try with an empty needle to take a bit of blood out. It should come out pretty evenly, if you are getting a very slow and inconsistent flow of blood into the needle as you pull the plunger, you have not hit directly into the vein.
Have fun, listen to trance music or something with a heavy 1/4 bass tone. Heroin is very fun with that kind of music.