I have to say that it doesnt sound to bad, you have to remember that they have to warrenty it and they are in business to make a profit. If you have had no luck in selling on here or the bay then maybe that tells you something about the value of the item and what it is worth.
I would also contact Mifsuds although I think they will offer about the same. It may also be worth trying london camera exchange if you have a branch near you.
Edit:-
Just looked at what you have for sale you are asking approx what they are selling for in shops, as I said they do need to make a profit.
Sorry if the first paragraph sounded a bit off, I didnt mean for it to come across like that if it did.