Those are all really nice corals. If you had a large budget and needed "that piece" or "that fish", then do it. I also think you could easily make that money back by fragging, but the fish is just money tossed away unless you breed.
I would think long and hard about spending more than $100-150 on a coral, but I would consider a lot of things. The ORA clowns I want are $350 each and Im getting them when I set up my 50 gallon.