Newbie Market Price Question

Hi All,
I'm new here and to this sorting hobby/obsession. I was wondering if anyone is tracking/graphing prices of copper penny lots via ebay, or if anyone has a particular system to gauge current market value?
Thanks in advance,
Atticus
I'm new here and to this sorting hobby/obsession. I was wondering if anyone is tracking/graphing prices of copper penny lots via ebay, or if anyone has a particular system to gauge current market value?
Thanks in advance,
Atticus