Here are mine...purchased from a trusted LFS several months ago...they have split several times(recently gave some babies to a fellow reefer)...the origional was a single section ... they have grown considerably since and do very well in the right conditions(stable system/moderate current/moderate lighting)
I can't help with on-line sources...I've never purchased any type of coral on-line...only clean-up crews...personally I prefer to see what I am getting in advance.