Some good species would be drosera rotundifolia,drosera adelae,drosera spatulata,sarracenia judith hindle,sarracenia purpurea and the venus flytrap

D capensis

Sarracenia rubra ssp rubra. Possibly the least showy Sarracenia species but it grows like a weed and forms new crowns readily. In zone 9 Drosera binata will mulitply rapidly and is one oof the showier Drosera. I'd recommend Drosera peltata, auriculata and whittakerii but you may have trouble sourcing them. Utricularia bisquamata and livida are vigorous and flower readily. For more showy Utric, U.praelonga is very easy to grow and flower although I find the flowering season is much shorter than the others.

Any Sarracenia with pink or red sells well. People are less inclined to buy Venus and sundew because they look fragile. The truth is they are much more difficult!

Propagation method needs to be assessed case by case. I agree with "corymbosa" about division; only a select few species are suitable for low-cost production.

Check out my slideshow for some ideas. www.myspace.com/joshlynchplants