Here's a site I saw the other day that looked pretty nice:
I have not used them so this is not a recommendation. Just price comparison. Designs start at $880 with 3 rounds of revisions. So, if you know what you want then this could be a cheaper route. If not this isn't the package for you. Once they are done you're on your own so this is a hands off approach if you want someone who will work with you over time I'd stick with your designer.