Steelbooks of rarity and epic prices

[NARMAK]

Ok, before i get called blah, blah, blah scalper, blah. Please note this thread isn't for discussion of future titles that will reach rarity etc to the heights of FS Iron Man but if you talk about it ITT your not gonna get a firing squad, at leats by me

So what are the rarest steelbooks and the ones that are so difficult to get hold of? Not all obviously will also rank highly in the price stake either so this is a two ranking system.

1) Rarity - Limited production numbers etc
2) Price - Reached sky high prices even if they had higher production numbers than other titles

Now, don't think this thread helps scalpers one bit considering this is the past and prices are so hiked up anyway lol.