QVC offers the set of three liners for $25 + $3.97 s&h. It breaks down to about $10 each... still beats paying $18 for one Urban Decay 24/7 liner.
The consistency of the Mally liners seem to be smoother, creamier, and thicker. The liners are listed as waterproof yet they are creamy enough to blend (as long as you blend and smudge within 30-seconds of application).
I've been using "Midnight" eyeliner on a daily basis and have found it to have slightly better staying-power than Urban Decay's 24/7 liners on the waterline. I also tested the "Milk Chocolate" pencil for brow filling, and it's worked wonderfully, especially if you stroke a light dusting of brow powder over the pencil to help set it.
My favorite colors would have to be "Midnight" and "Royal Plum". I use those most frequently and love the "Royal Plum" liner when I want an alternative to black, but still desire a dark shade. I also like "Caribbean Sea" for a pop of color when using neutral shadows. Overall, I would recommend the Mally liners if you're looking for a long-wearing liner at a reasonable price (for brand-name cosmetics).
Below you'll find pics of the liners themselves as well as swatches... enjoy! :)