I wound up placing my order today with another site that I found
called Tomato Growers Supply Company (www.tomatogrowers.com). Their
prices were slightly higher than heirloomtomatoes.net, but they
offered both heirloom and hybrid varieties. I wanted to try some of
the aforementioned heirlooms (recommended on an episode of Gardening
By The Yard), as well as some of the hybrids recommended over the
years here in rec.gardens.