I have a bunch of Ricordia in my tank now, I glued it to rocks myself, gel glue and a little mess and you are done, a mini project.
I purchased the Rics online, without seeing them, not necessarily on Ebay but then again Reefs2go is on Ebay, on MR and have their own site.
Its a matter of doing your homework and not buying from rookie sellers or John Doe's that happen to live near the coast line.
What is the diff if you buy fish online from a reputable store vs corals??? I never had an issue, sometimes the fish arrive a little smaller than I expect but I get 2 weeks guarantee and always get my money back and an apology, with corals too. That has NEVER happened with a brick and mortar store.
Buying online is fine and I am in for the group buy.