As you can see, it's not a very large container. It holds only 2.7 mL of product, which seems tiny compared to the 10 mL of product that Urban Decay's Primer Potion has. That little piece sticking out on the bottom of the "pen", is actually a pump used to get the product out of the top. Too bad it takes about 10 pumps just to get any product! As well, it comes with a built in brush at the top to help with application. Unfortunately, I just find the brush to be a bit annoying as it tends to get in the way, and I end up having to blend out the product with my finger anyway. As far as the actual result, I was a little disappointed that it didn't really make my eyeshadows appear any more vibrant than without primer.Overall, I'd have to say that you'd be better off spending a few extra dollars on UDPP, or even Too Faced Shadow Insurance. You get better quality, and although the price seems expensive, it's worth it when you realize that Quo's primer retails for $13.99 plus tax for only 2.7 mL of product. The others are both $17, with 10 mL of product. So unless you can't obtain UDPP, then yes Quo would be an alright alternative. But if you want the good stuff, ya gotta spend the extra dolla dolla bills! Cheers ladies :)
