I am a gel liner novice. I don't know why, but I just never trusted the stuff. However, when my beloved benefit came out with this product, my curiosity help set aside my reservations.
I've been using this product for a couple of months and I LOVE it. I personally think its great for beginners (because obviously I wasn't that familiar with gel liner and I can use this product easily enough). I have heard of some bloggers not loving this though...
So it is marketed as a long wearing, easy to use gel eyeliner. They are even pushing the specialty eye makeup remover because it is soooooo long wearing. Girl, bye... Don't waste your money on that. It is long wearing but not so tough to get rid of that I have to buy a specialty remover for it. These are probably the same people that buy the specialty beautyblender solid soap.
You can purchase it at Sephora, Ulta or Benefit.com. You can always buy the mini sample (I'm such a commitment-phobe when it comes to high end makeup that I almost ALWAYS take advantage of mini/travel/sample size before buying the full size). Sephora even has a deal where you can try the liner and mascara for $22.