"i found 400mh highbay for 60. bellsouth is selling them. they are 277 volt though. is there a way to convert it?"
No, and for a halide that's a bad price anyway. It should be $25... Maybe $35 if you aren't willing to wait.
Just keep looking. Unfortunately you have to use the right search terms on craigslist or ebay to find them all. Search for wharehouse lights, halide, hps, grow lights, high bay, and low bay.
There's also freecycle.org if you can really wait and watch for a while and would rather get a handfull of them for free.