It's not new, but I waited and watched and finally found a craigslist deal for my Canon Powershot S3 IS and couldn't be happier. It's not an SLR but about as close as you will get in a point and shoot style camera including the ability to add lenses and filters, manual/aperture/shutter speed settings, custom WB, bracketing, manual exposure, etc...
If you watch for a bit, you should have no problems finding one for well under your budget.