Lots of those species on that list are commonly sold. Whenever I go home I see most of those species there in a LFS for sale for pennies, most people though go to the local ponds and pull most of those species out with cast nets, fishing poles or they skim the surface to catch schools of fry to raise up. Some of the nicest SA and CA cichlids I have ever seen came out of a pond I go to.
What are the species, I might already have some. Or know a place that might. Forgot the store name but its a warehouse style, well there is two different ones. One is towards Pearl City the other is in Millilani. I know of a small mom and pop one in Aiea which have tons of cichlids, aros etc.