I did not like this eyeliner, I found it difficult to apply; barely any product would come off of the applicator. It also did not last long, for the product being an eyeliner, and then the price itself.
My personal favourite, and I have yet to find one that beats it, is... NYC liquid eyeliner, it is such a good price and works amazingly.

I have purchased this product many times and in the past little while I have not have the same results. I noticed that when I use the eyeliner after applying an eyeshadow (not MAC), the liner will not work. It appears to get coated with the eye shadow and will no longer leave a line where applied.
aside from in that instance, applied to a naked lid, this is the easiest liner i have ever used. easy to apply, and decently long lasting.... though i tend to re-apply more often than some liners.