It's purchaced "by the thousand", and by grade, meaning a set price per 1000 board feet per grade of wood as scaled by the mill upon delivery.
Oak should be $1100 -$1200 per thousand for top grade veneer, $700-$900 for low to mid grade veneer, $500-$600 per for top grade sawlog, $350-$450 for #1 sawlog, $300-$350 #2, $250-$275 pallet.
These are "delivered in" prices paid by the log yard or mill, NOT what you will expect to get.
To be fair, letting the logger earn a fair profit beyond logging costs and $500 a week paycheck, you should look to break it down 60/40 in your favor. Meaning you get 600 of every 1000, he gets 400- AFTER TRUCKING COSTS if he doesn't truck his own.
If it's miserable ground, then it should be closer to 50/50. You won't get rich, nor will the logger.
Maple should be $300-$350 for top grade, $150-$200 for lower grade, $100-$150 for pallet, again, delivered in to the log yard or mill.
I am basing the prices I tossed out here on what the same wood brings here in NH. I could be off, but I should be close.
Get 3-4 estimates in writing from the more reputable loggers near you. DO NOT let on about the others when talking to one. Choose the guy you like best from the ones who are within 5% of each other.