wholesale aquatic in my opinion is the best place to get live rocks online. The prices are very low and the quality is very hi.
http://wholesaleaquaticsupplies.com/...b6dfe0d0aaa1f2
I have delt with them on many occasions and they are outstanding. I live on the east coast and got my live rock from them in california in 19 hours. It could have been 12 hours but i had to wait and get off work to pick it up. If you decide to buy online make sure, no matter who it is, that they can ship it to you air cargo. It cost just as much as standard shipping and you get it fast. This can only work if you live close to a international airport. They put it on a plane and ship it to you and you go to the airport and pick it up.
All live rock you get online will have some die off but I didnt have much.
when you get Live rock from the LFS you dont have to worry about scrubbing it and rinsing it its in good shape and ready to go in your tank. you pay for the scrubbing and rinsing
But if you are just starting up a new tank I would get it Online.
you are already going to go threw a cycle.
Cure it in your display thats what i did.
filled the tank with water hooked up a skimmer rinsed the rock off that i got and dropped it in the tank.
Dont put in sand until the cycle is done because you will have to siphone out dead stuff.
Its already gonna be a month or two before you put fish in waiting on it to cycle might as well do it in your tank.
I got 45 pounds of fully cured live rock shipped to me for about $175 bucks (air cargo).