I was given this product for a secret santa a while back and have used it quite a lot over a long period of time. The only other eye lid primer I have used was one by benefit which was more like a concealer and primer in one.
One of the things i really liked about this product is the tube and applicator, it makes applying to the eye lid really easy. I also liked the slightly pearly sheen it left on my eye lids.
I was a bit disappointed in the lack of staying power it provided for my eyeshadow. However, it extended the wear longer than I would have gotten without it, but didn't prevent creasing. Maybe I'm being fussy as my last primer did prevent creasing.
It is also slightly thicker and gluggier so it made blending a bit harder, although, if you spread it around with your finger tip to thin it out it seems to be easier.
Overall it's a reasonably good product for the price, and if anything, it provides a really nice pearlescent base for your eyeshadow.
Purchased this item from kmart ($5) a couple of days ago and couldn't be happier. Not only with the price as everyone loves a good deal but the performance of this item. Easy application, eyeshadow adheres to it and stays on ALL DAY. Very happy with this product and will purchase again as needed.