Go to your state's extension office either physically or online. They should have information for land owners regarding logging. For instance in NC, there is a Best Practice manual that you can refer to in your timber sale the tells the logger what is expected. You can also place your own limits as well. In NC you sell the trees as a timber deed. The usual aggreement is that the logger has up to two years to come get the trees which is kinda scary. After two years the trees are mine again. And I get to keep the money.

They got mine fast though, within a month or so.
The timber market is just that, a market. The price today is going to change tomorrow. May be more. May be less. I sold timber in 2000 via forester and a closed bid auction. At the time the price for hardwood vs pine was pretty much the same per board foot. You made more on pine though since more pine grew per acre than hardwood.
But this is my local market and may not apply to your area. The extension office should be able to help. The NC website has information of selling your timber. As well as the market price average for different regions in the state. See if you state does the same. That at least gives you a ball park number.
There is also the tax implication of selling your timber. A forester working for you should sell the trees, manage the logging and get you started with the taxes. I paid 10% to the forester. Best money I ever spent.
On the other hand maybe you don't have enough trees to sell. You might be able to take the logs to a mill and sell them yourself. But that can be tricky. They might not want the trees unless they know you. And do you know what the log is worth? I know that the some contractors in my area will take small loads to the mill and they get paid.
Another option is to have a portable mill come in and saw up the trees for he and thee.
Be careful with loggers. Mine where pretty good. They left some trash that the forester made them clean up. But they also buried some in the slash piles. But they did not destroy the forest either. Some will offer you a pittance for your wood so you really need to be careful.
Later,
Dan