I believe on TCG's newest version on their actual website they have a "Normal" price which I believe is an indicator of NM averages. Do not use things like magiccards.info though which uses all of the averages including Damaged prices. For example yesterday people on salvation were freaking out that Underground Seas on magiccards.info were 213 bucks mid, but that includes one seller who has theirs listed at 1500 dollars. The true TCG Average for NM and excluding the outliers is more like 161~