I figure about a grand for the 440 block, and machine work,(minimum!)(add in what, another three grand more, if you want a good aftermarket block?), 2500 for the crank,rod, and piston kit, 2300 for 240s with hr springs and titanium retainers, 400 for the intake, 400 for the sft cam and lifters, (lots more if you want a roller), 1100 for a dominator or holley sniper, 1700 if you want the super sniper.
Then you need... a good oil pan and pump and pickup, or exterior oiling, rings and bearings, good head gaskets, pushrods, a real good ignition system and distributor, gaskets, and who knows what else. Probably another two grand.
Im not sure that sounds inexpensive to me.