What I have already:

Tank
sand Nature's Ocean samoa Pink (very very pink sand....I love it)
skimmer
Chiller
Mag 7 for chiller
Sump reef rubble rock

I'm looking for a cheap 55g for the sump. I hope to find one on the cheap side. It doesn't matter if it's scratched since it's a sump. If anyone in WI has one let me know.