I resurrected my old Hassy V system a year or so ago by moving to a digital back. An advantage of the V system is that there's a pretty robust second hand market and you can probably assemble a nice kit within your budget if you stick with one of the older Hasselblad or P-series Phase One backs (I didn't, but that's a whole 'nother story). Chosen carefully, the V system Zeiss lenses perform quite well on the digital sensors, and can be had for a reasonable price, too (US$500-1000 for a good specimen in the "CF" series, depending on the lens and excluding the more exotic 40mm IF or Superachromats). There are two potential caveats, however. First, getting all the pieces to play nice together may require a visit to the shop to align the mirror and focusing screen - digital is in general less forgiving than film when it comes to focus accuracy, and cosmetically "mint" bodies can be significantly out of alignment. Second, you will need some patience and/or good eyes to get your images in sharp focus, at least initially. After years of using auto-focusing DSLRs, manual focusing on a ground glass was a skill I was forced to re-learn. But the results are worth the extra effort, in my opinion. YMMV, of course...
John