My favourite online coin resources - http://www.lincolncentresource.com/ I really like the varieties checklist LCR has to offer www.pcgs.com Great for approximate values and auction prices realized www.usmint.gov For all of your modern commemoratives and uncirculated coins www.apmex.com For bullion investing and some rare coins www.coinworld.com For latest coin news and articles. Agree or Disagree?
I use all those sites to some extent. I've yet to order from Apmex, but I visit from time to time and I get their emails. I don't spend much time on coinworld though, maybe I'll check it out.
Disagree Varieties: http://varietyvista.com/index.htm http://doubleddie.com/ Bullion: https://comparesilverprices.com/ Coin shows: http://www.coinzip.com/
Don't forget www.cointalk.com Also: https://www.ngccoin.com/price-guide/world/ https://www.pmgnotes.com/priceguide/world-note-price-guide.aspx