
Completed items on the Bay are most certainly the best up to the minute price evaluation. It also helps educate you on what a coin will NOT sell at as many sellers list the same BIN (Buy it Now) price week after week after week for the same coin. It's also possible to see if someone has continued to list a coin you are interested in. If it hasn't sold for weeks at a given price, there must be a reason. Usually, auction will almost always result in the lowest prices paid.