I didn't post a stupid answer - what are you oging to keep in the tank, how big? How much maintenance are you prerpared to do manually.
List 1 - 20 gallon tank, 20 pounds live rock, hood with lights, oolitic to sand to give 1 inch cover, bucket instant ocean, test kits, hydrometer, heater stat, power head, fluval 4.
List 2 - 100 gallon tank, salt mix, oolitic sand for 4 inch bed, 100 lbs live rock, RO machine, protein skimmer, powerheads, 2 * 250 metal halides,heater/stats calcium reactor.
The first is a super basic desktop, the second a reef. What do you want to do? There are a lot of variations