I live near the East Bay Vivarium, and was able to visit there recently. I purchased a snake-shipping box, foam inserts, and a 40-hour heatpack. All were top-notch, and their pricing was competitive. The woman who checked us out was friendly and helpful in picking out the right heatpack for us, and helping us to be sure that we were using it right.
The store itself was well-kept and neat. Cages were of a good size, and their animals looked healthy and well-fed. All in all, I found the East Bay Vivarium a great place, and I cannot wait to get back there!