Why don't you hang on to them for a few weeks then ask one of the moderators to give you access to sell on selling page.
That way you will surely get more interest. People won't respond here to your question mate.
Another way around it is while your using the forums you will get to know who has got what machine and I don't think there is an issue dropping someone a pm privately if you believe they may be interested in something you have.
What you sorry for? Makes no odds to me, I'm just giving you a few pointers. I'm assuming you don't have a Kemppi and the boards are no good to you. Unless they are really cheap I doubt that they will get sold as there faulty. Some one may be able to repair them but they won't want to pay over the odds as its a risk. Good luck though.