You can get melanotan vial from some websites for less than 10 euros. Others still ask 30-50 euros. That's a huge difference for the exact same product. Most expensive suppliers promise more purity but in the end the cheapest ones I ordered were at least as good as the more expensive ones.
What is the right price to pay for a vial? Many suppliers offer you a reduction in bulk but still it's a whole lot more expensive than the cheaper ones. In the end, many suppliers buy 10 euros for a vial and sell it for 30-50 euros. Hopefully we can elaborate on this as many people pay too much out of fear. They think they have better stuff when they pay more.