Went probably half a dozen times and got what I needed (fresh mozzarella), but called or drove there an equal number of times to find that they were out.
The only time I got upset (and the reason I haven't returned since) was when I called them to check, they told me they had fresh mozzarella, but when I arrived they "discovered" there wasn't actually any there. It's at least 20 minutes for me to get there and I really don't appreciate my time being wasted like that, especially if I bothered to call in advance.
I'd strongly recommend World Harvest on University in Champaign as an alternative. It's cheaper (~$7/lb rather than ~$10+) and they've been much more consistent about having fresh mozzarella available.