It's a tad pricey, but you really get what you pay for. A little goes a long way so you can count on it lasting.
The trick is to apply it with a powder puff in a rolling motion and dust off the excess with a big fluffy brush. For a lighter look, you don't have to use the powder puff, you can just dust it on with a fluffy brush.
It has a lovely fresh, clean smell, and is incredibly light, with great setting power and coverage.

It comes in a variety of shades, so you'll never be stumped. It's also easy to blend, so you can achieve your exact shade. I use Garnier's BB Cream in medium, which tends to be one shade lighter than me, going over it with the TL5 translucent powder gives me my exact shade.

All in all, a great product. Price may be an issue, but it can be overlooked due to the great quality and effectiveness. :)