Well it depends on what is 'in reason'. I did mine for about $300. If money isn't all that much of a thing than I would get a Blueline 175watt Metal Halide retrofit kit for lighting. That way you can have anything in your tank including clams.
Here are your steps.
1) Get the tank and put in 4 inches of sand (live or dead, doesn't matter)
2) Put 'some' live rock in there. I would recommend about 10 lbs. You want to save a little room for rocks that you'll buy that have corals already attached. There are a few things I would love to buy but can't because they are attached to rocks that I can't fit into my nano.
3) Put in a a raw grocery shrimp for until your Amonia comes back down from it's spike.
4) Put in a small cleanup crew. A couple hermits and 4-5 snails of differing types. Put the lights in at least 3 days before you start the cleanup crew.
5) Wait a week then finish up your cleanup crew, something along the lines of what I have.
6) Wait a week-month, then put in your one fish
.
That's basically what I did and mine looks great to me. I spent $50 total on my lights. If you spend an extra $200 you can get the metal halide and be able to support clams and all sorts of coral.