Do you know how much price of snake wine in hanoi? And where i can buy?
You can get to Nhat Tan, there are many restaurant serving snake wine.
Le Mat is a village so I'm afraid they're not very good at commercializing their products.It's kinda visit and buy on the spot thing rather than ordering online. But I'm not a fan of this kind of thing so I might be not very up to date with my information.You might want to search "Le Mat snake village" or "Lang ran Le Mat" (vietnamese) to find out more.
You can google these key "rượu rắn Hanoi". Many result and address you will get.You should check this topic too Unique Vietnam food
There's Le Mat village near Hanoi where they sell everything, if you're interested in snake vodka and stuff, you should check that out.The price varies depending on which type of snake vodka you choose.