The main appeal of prohormones is availability. A lot of people don't have trusted sources for the real stuff and they don't want to risk getting in trouble with the law.
I use to get organon sustanon 250 redijects ( they came with 18g needles, but I transferred them to a new syringe with smaller needle).. They left me so sore for a week. Took one in the thigh once and I limped for a whole week.