Yes, it's a chain. But since there's virtually no competition on "spice shop", it's awesome all around.
They have the freshest, best quality spices I've ever seen sold. Their mixed spices and marinades are great. Everything has a sample jar available so you can smell it.
Only gripe is that for some things - cumin, for example - the local ethnic food shops have it just as fresh, at 1/5th the cost.