Why are these sites so inexpensive?

It's because we are building them on designs and technology we have already completed. Because they are not completely custom sites, we can put them together very quickly and efficiently. All ZIP sites leverage the same technology -- which allows us to offer this technology at a small cost. In contrast, the custom sites we build have completely unique designs and the underlying technologies are adapted to the precise needs of the customer. Such sites are much more expensive than ZIP sites, of course.