Not really, I used to track prices for cabs and pcbs but the prices of everything is so volatile these days there's not really much to do other than look at sales posts on here or post in the valuations section to get a rough idea. More now than ever there's definitely a 'collectors forum price' and a 'R@RE OMG' facebook or eBay value which seems to be 2 or 3 times the going rate.