I agree with Rivvm, while having good gear can make a big difference, I feel that the way you use your gear is even more important. I typically use two to three desk lamps, (You can see my lamps here) as my base lighting set up. Though in the case above, I was actually only using the one. It's amazing what you can pull off with just a couple of lamps, so don't underestimate them.
For example, as far as I remember, these two frames both used just two lamps. (Possibly even the exact same lamps) Notice at the difference? Good, and Bad.
I've also used a short string of cheap, white Christmas lights, and some Lifelites (See here) to bring in more variety.
But even now, most of my 'outside' shots are lit with just two or three of those desk lamps. I did use just one lamp in several shots for "And Men Loved Darkness," showing that more lights isn't always better. (Here's some pics from the making of that film that may help you.)
I'm just saying that there's a lot more potential in a couple desk lamps than some may realize. Then, throwing in a few cheap flashlights and a stand of Christmas lights can really add a whole lot to a film, without doing the same to the budget.
Now, investing in fancier bulbs, tiny LEDs, lighting gels, and all sorts of other stuff can shoot your films off the charts in terms of lighting and design, (See Sloth's Work) they aren't required to get nice lighting.
I've spent around $100 on my lighting gear over the last five years. With most of that being Lifelites LEDs. I'm not saying you shouldn't go for some of those awesome kits, because if you can, then go for it. But if you don't have the money, you can do quite a bit on a budget. You just have to learn how to work it.