I have offered 4 varieties of tomatoes for sale this year, Kelloggs Breakfast, Cherokee Purple, Red Brandywine and Yellow Pear. I've sold over 150 plants @ $4.00 each and not a single person has complained about the price.
I do label them as organic heirlooms, which they indeed are, and that I have sprouted them from seeds from last years tomatoes. I mix up my own organic potting mix. People seem to appreciate the healthy plants that I have raised from my own seeds.
Happy Gardening!