Hello,
Gallium is a 100% nontoxic metal that can melt in your hand. I own ~1.75 kilograms, and am trying to sell it. I think the best way to sell it is to contact museum gift shops, technology stores, and similar stores to sell in bulk.
Shipping it has a $25 HAZMAT fee, not because it is dangerous, but because it corrodes aluminum. Therefore, I can only ship the gallium metal to 1-3 different buyers. In other words, you cannot list it on eBay and sell 5 grams to 400 people. You would have to find stores or companies to purchase it.
Gallium sells for around $15/gram. [login to view URL]
I bought in bulk, so I can sell way below $15/g.
Let me know! Thank you.