When their products are not on sale, they're a bit on the pricey side, however their store is generally inexpensive once their discounts come into play. I love that they have a TON of different sized stretched canvas. They have a ton of supplies you can use too, some out of the ordinary.
The nice part is that it's by ASU. That's also the bad part too. I have a feeling that their prices are a bit expensive generally in the off-school season because of the ASU students. So typically I try and avoid going there around those times. However, the best time to buy is when school starts or a new semester starts.