The last time I went to the supermarket, I wondered off to the cosmetics aisle, and found by accident this matte top coat by Essence. It was only 3 euros. I had been drooling at China Glaze's Matte Magic, but here we don't have this, so I was pretty happy when I found this.
Here it is in action over OPI teas-y does it. I think it's pretty good and cheap, so I definitely recommend this. I was very satisfied with the result.
And this is the same mani but with some konad flowers on it. the effect is very subtle so click for a larger view.