Tidal Gardens does this, and also complements it with detailed videos on most of their coral species. They are like the BRS for corals. Usually covers lighting, flow, feeding, agression with some stunning Coral videography. I have not seen any other vendor speak so knowledgeably about corals. I am sure that they are all knowledgeable, but no else takes the BRS-route to make detailed videos of the products that they sell - hence I have not seen them. Check videos for "Tidal Gardens" on youtube, and you will know what I mean.
ACI Aquaculture also makes detailed youtube videos on marine live animals products, which are also pretty good - however they are wholesellers.
You can't go wrong with either source for knowledge about what you are going to buy, what's easy, what's slow growing, what is aggressive etc, expected pests etc.
As an example, i love nassarius snails - so i likely have to make a hard choice before getting an Elegance Coral ... that looks an anemone, but unlike an anemone it doesn't eat fishes ... but it does eat snails!!!!!
On the other hand , my fishes are $90 and my snails are $3 - $4. So, if I ever had the anemone-itch, maybe i am better off getting an Elegance Coral instead of anemone, to contain my potential loss.
stuff like that. But understandably more detailed. They don't sugar coat the bad or deadly aspects of the live creatures.