Yep, that is what I do now but since their inventory cannot be trusted. Although I always hope to find some retired sets inside the store.
The only thing I don't like with ISPU is that they always put tape on the box...
I am thinking of getting the Arkham Asylum at 20% off + the 10$ off coupon since ToysRUs seems to be the only retail apart from LEGO Shop that sells it.
I don't think I will find a lower price, am I right?