Invest in coins

I think my BIL#2 can become a coin dealer now. The reason I said so is he has lots of coins from different countries. He will upload the coin at Ebay international and sell online. Mind you, the price that he listed is not cheap at all. I wonder why all these people willing to pay such high price just to keep the coin? Are those coins really worth that much? I doubt. Holding too many coins in hand also no good. This is because I see my BIL always carry the coin bag wherever he goes. He worries his bag missing, so always bring it along whenever he goes out. So stress ya. When he drive back to Melaka from Kuala Lumpur, he will bring along his bag too. *shake head*!