I have purchased green star polyps, a bubble coral, a toadstool leather and some ricordea from this site. The first three have done very well. The green star polyps have tripled in size, the bubble coral has doubled in size and the toadstool is growing. I didn't have the best luck with ricordea (partially because the rocks that they were attached to were too small and they tended to fall into my rocks when hermits and fish moved them around.
They have always arrived in great shape. Mine have always opened up the next day.