Studio photography is damn expensive -- I can tell you first-hand. The best "cheap" studio strobes you should get is probably Alien Bees. Decent, try, White Lightning. They are both from the same company, so their accessories are interchangable. If you want best, then try Elinchrome, or Speedotron. Then theres the choice of getting a power pack module or using monolights. You will probably want at least 5 strobe heads if you want to do serious lighting. But for the most part, it's creativity and understanding of photography and lighting in itself.
After you decide on the light you want, you'll need light stands, sandbags, gobos, flags, softboxes, umbrellas, grids, honeycomb grids, light meter, gels, seamless background, muslin (not muslim), wireless trigger (pocketwizard), etc.
Of course a camera also. So as you can imagine, it will be pretty damn expensive.. If you're shooting digital, it may be fine for certain things, but you may run into a client that wants film.. Will you be shooting Medium Format films? Large Format? How about a scanner? Or paying to have the slide/negative drum scanned (expensive!)?
So I would say in a general sense, if you buy cheap strobes, you can probably get three strobes heads and a few accessories for about $2,000.
I personally use Speedotron equipment and for location, I use white lightning and alien bees. They work fine.. Just be sure you pay extra for UV tubes, otherwise you end up with a strange color cast caused by UV fabric whiteners.
If you know very little about photography, spend some time learning it first before opening up a studio, otherwise you will end up confining yourself to a sub-par Walmart turnkey system.
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