i'd try to move the rock a little closer to the center to avoid the pieces on the end from touching the glass, it'll make it IMPOSSIBLE to get certain ares of the glass when scrubbing! Tanks looking good though.
If you're talking about the price that it would cost to buy the coral directly from the wholesaler, that's what I did. I work for my LFS and buy all of the corals for the store from the local wholesalers.