We got a great price online through Quality Bath and they delivered right on time.
The main drawback on these large seamless units is that they weigh a ton. OK, I'm exagerating... this one weighed in at about 300 lbs. It was too heavy for us to move it into the house when it was delivered so it had to sit out front for three days. Fortunately, showers are made to get wet so a little fog and rain didn't bother it.