I have ordered successfully from Flavourstop numerous times. I always wanted to try his Afghan #4, however the price $210/g always deterred me.
He is now offering samples of any of his products you just have to pay the $5 standard postage. I placed the order and it arrived in 7 days to the East Coast US.
The packaging was inconspicuous and non-descript. Inside it was sealed both vacuum and mylar. He sent me .15 gram sample of his heroin. Which I was able to get 3 shots out of. It was a golden brown color and had a slight vinegar smell to it. The way that I know that heroin is really good is when immediately after IV'ing you get an almost uncomfortable pins and needles sensation in your temples. That subsides into the greater rush after about 2 minutes. This has only happen to me on very good dope. It wasn't overly sedating which I like and there was very little nausea which is also a plus. Overall I would say that this dope offers a clean rush and high with minimal unwanted side-effects. I can easily say that it is a solid 9/10. Perhaps if I had had more I would have been able to really enjoy it. I was also worried about OD'ing so I started rather small.
FS is a great vendor and at this point I have tried just about all of his products with the exception of his crystal meth. And I can honestly say that he stocks only top-shelf products. He/they are also a pleasure to work with. Always responding quickly to inquiries. They and their products are very consistent. They post everyday. All signs of a great vendor.