@jeffphx
Hot toucan mix are nice. Come in bright colors.
Starting from seed are cheap and will provide abundance seedling. But for who want instant plants and impatience to wait that tiny seed to grow, buying flowering plants is an option.
Nursery sometimes also sell novelty or special variety from cuttings which not available in seed form.
By the way how about your experiment eating them ? Is the taste just the same to vegetable purslane or worse ?