It may be close... my only point of reference is I recently shipped an older 50 lb Mac Pro from Oregon to the Midwest (I forget where, exactly) and that was $42

It may be close... my only point of reference is I recently shipped an older 50 lb Mac Pro from Oregon to the Midwest (I forget where, exactly) and that was $42.00, with insurance, through USPS Priority Mail. I paid online which gives you a discount, but shipping rectangular boxes is cheap.