I like the critters from IPSF, I've ordered the 9 for $99 a few times and was very happy, I got a few bristle worms that now took over the tank LOL as well as alot of nice worms for the sandbed that have continued to thrive. I also like their pod kit, I used it to start off a refugium, at one point I had so many mini brittle stars and pods I was able to bag some up with extra cheato to give away.
The snails they sell are nice and small and lay eggs on the glass that hatch to mini snails, its alot of fun to watch. So far they have done good job providing exactly what they promise to, Ive even had a few "freebies" like a xenia frag or a neon green leather frag pop up attacked to the rubble in their sand.
Maybe prices are better at local stores but I was pleased to find very hardy little clean up critters that continued to reproduce in my tank. They arrived healthy and thrived

. Weve always left them good feedback, it even showed up on their site for awhile.
another site that has some nice prices on clean up critters Ive always had good experience with is
www.reeftopia.com
edit: I almost forgot, the coral heaven food they sell on ipsf.com as an option of their package is nice too, i would mix a pinch with cyclopseeze and selcon and turkey baste it on my zoos and shrooms, they really seemed to like it.