After loving the sample of the original Urban Decay primer potion formula, I was eager to try the matte version, which is called Eden.
I'm not quite sure how big the sample size is, but I do know it lasts about a month with regular use. I found this to be hard to work with. You had to use the tiniest amount and I would always over-do it. It was super brightening and that's why so little is needed. It did matte-ify, and it was long lasting, but it was too difficult to work with and I don't plan on repurchasing it.