I've been grilling for many years, but have only done indirect cooking a few times.  Piling the charcoal on the side of the grill is good, but having a basket to hold the coals after starting them in the chimney helps in the long run.  I've been thinking about getting these for many months, but finally, as I was getting some other items, I went ahead and got these as well.  They work just fine for what they were designed for.  On a smaller 18" grill, you don't really need both of the baskets, but they come in a pair, so you're left with one for later use if the other gets damaged.  It works very well for what it was designed for, but the aluminum is a little flimsy, so I don't expect it's going to last forever.