I don't know about the new hemis, but a good running 80k mile 6.0 LQ9 (345 hp) LS motor from the junkyard is $1500 here. I put one in a buddy's truck a few weeks ago.
A 5.3 in the same condition is $750.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax