Problem is, the seller wants to make a percentage, at least 20%, so you’re starting out your “investment” 20 to maybe 50% in the hole. Not an auspicious start! Same thing when you go to sell. And trading in metals or commodities is very risky– all it takes is one revolution in Africa and they might dump their metal reserves on the market, kaboom go prices. There’s also the rule of thumb, if an “investment” is advertised on the radio, it’s not a good investment. Good investments are scarfed up immediately by big investors. If it has to be advertised, it’s almost certainly not a good investment. Also remember that nobody can predict the future. The Hunt brothers lost like $700 million speculating in silver a few years back. If guys that do this full time all their lives can lose a huge bundle, how likely are you to do any better?