As others have stated, commissions are always negotiable.
You would be well advised to evaluate your purpose for selling.
This will determine if you want your property marketed by an agent who places it in the MLS and waits for a buyer.....
An agent who will find the appropriate buyer for your vacant land.
Based on whether your intent is to market or sell, choose properly.
Actually, for selling vacant land in this market, I'd offer a real estate comminnion of 10% depending on the location, sales price, how fast you need to sell.
Have the listing agent take 4% and offer 6% in the MLS to the buyer's agents
Do as I say and it will sell faster
All commissions are negotiable as there are no set standards which would be against anti-trust laws. I suggest that you interview a few agents from different real estate companies to determine what their fees are as well as their experience at selling land.
Good luck to you!
Prudential Connecticut Realty