440 block what is it worth?

$200 for a long block with forged crank and tranny is a decent price. Odds are that you will only be able to use a few of the parts but at that price a person can usually end up okay. I've bought motors like that several times and ended up with nothing but a set of core heads and a core crank which means I didn't even break even after spending the time to pull everything apart. Forged crank motors were often run hard so it is fairly common to pull them down and find spun bearings or cracked main webs or other internal damage. And forged cranks aren't worth much money because stroker cranks are so much cheaper these days.