How much should a basic 340 rebuild cost?

He looked around, where he can't find anything and stumbled upon something he supposedly cooked up years ago from a machine shop that prolly isn't around anymore. I'm sure he had this quote filed in the safe under the B's

oh, wow, all the parts we talk about all the time here on the forum. imagine that.

and a comp 268 on a low key stock rebuild that didn't get balanced? sure. sure. okay. cool. cool. right. riiiiigggghhhhhtttt.