Don't know if you receive this, but interesting and free: https://www.ngccoin.com/WMR_Preview.aspx?wmrid=343
Even if ya could accurately predict them - not likely to make a "killing". You may however be the one getting "killed".
Ehhh, not really. That's because if you read their disclaimer their results are based entirely on what they are calling "average dealer asking prices". The reason that's important is because it is the norm to find dealers all over asking widely different prices for the same coin. And when I say widely I mean widely ! It is not unusual at all to find one dealer asking say $500 for a coin and another asking $,1000, or more, for the very same coin. And if you understand where these "dealer asking prices" come from, (which is the electronic dealer markets most of the time), then it's also easily understood how these changes in "price" can be accounted for. Put another way, it's all an illusion. You see a dealer can "ask" anything he wants, anytime he wants - but that doesn't mean he's going to get it ! This is why when it comes to real world coin values the only thing that actually matters are realized prices - not asking prices.
To be honest, I never read that, I naively assumed these were selling prices...see what we get when we assume...
