"across the board" does not mean this .. across the board would mean copies of alpha flight 73 are worth something..they are not. ...but #1 is out of the dollar box now
"across the board" for books considered keys and semi-keys, maybe, but as much stuff has faded as has popped
for example, a lot of these starlin warlocks are no better, maybe lower, than a few years ago, but 179, of course, a copy of which I sold for $7 in November here, has exploded, although at the same time I bought a really nice SS copy for the price raw copies are going for now! (nicest 7.0 I have ever seen): https://www.ebay.com/sch/i.html?_from=R40&_nkw=warlock+starlin&_sacat=0&LH_TitleDesc=0&rt=nc&LH_Sold=1&LH_Complete=1