Not really, and the ones that do tend to be massively overpriced for what you get and what you need.
Your best bet is to ask on the boards if anyone has, say, chaeto or LR rubble infested with brittle stars, lots of wormy sand, or what have you that you can have/buy. In fact, if you just get a quart or two of good live sand from a couple different, mature tanks (or LFS stores that have their own live sand tank plumbed into the system,) you'll generally be covered as far as everything but the micro brittles go. It also helps to start your tank with a few pieces of well-matured live rock from another tank that hasn't been shipped and experienced any real die-off; most live rock that's been in a tank long enough to get nice and grungy will have many bristle and other worms in it, along with various pods.
