For my tank, so far, for a FOWLR without a sump, not including the price of the tank I'm up around $1350 for hardware and I don't think there's anything major left that I absolutely need. That's skimmer, liverock(For this we'll call it hardware), a couple powerheads, test kits and a few light tubes. Of course there's heaps more you can spend, that would be nice but I think I've got the minimum now. So, I'd say $1500ish for a 4 ft 220 L FOWLR If you already have the tank and stand. Maybe $3K if you have to include the price of the stand new or have a sump along with all the expensive luxury bits like...I dunno, a tunze osmoregulator.