A-body 8-3/4 rears are coming down too. $300 is a fair price to pay for the housing and small axles, but I said no to one recently for $175...just didn't want to put it in the trunk of the car.
just sold one for $500 no questions asked in like 2 days. there are/were a few here for even more then that. for $175 your nuts for not picking it up just to make some money on. good luck finding many for $300. not saying your not going to find one but it sure isn't the norm.