IMO, alot of what that site sells is a huge rip off. You will after a year of buying corals have what they sell and more come into your tank for free.
Here is a ROFLOCOPTER for most reefers:
6 Baby Bristle Worms™ for only $19.95.!!!!!!
Iv heard the saying if I had a nickel for every bristle worm, but not $3.32
The only thing I would buy there is snails since even their algae seems rather over priced. The best place to get a macro algae pack is from another reef keeper either in your town, or I have had macro shipped across the country. Ask around and you should find lots of great stuff.