Hi Cobra – your least expensive option is probably a $499 JVC GS-TD1 (shipped from Japan via Amazon). You can download the English manual here. This is a fully integrated 3D camcorder that also shoots 2D. This camera was released a couple of years ago, at the height of 3D's popularity, and there are still a few available. Its advantage is that the 3D lens is built-in and requires no calibration or adjustment.
This camera got 9 out of 10 stars at Trusted Reviews in the UK, and it was a "Recommended Product" at digitaltrends.com: http://www.digitaltrends.com/camcorder-reviews/jvc-everio-gs-td1-review/
The next step up is the $475 Panasonic HC-V720 3D-ready camcorder plus the separate $270 Panasonic VW-CLT2 3D adapter. With the Panasonics, 3D is an optional accessory. Yes, the adapters require some calibration, but you can take them off and use the the V720 as a standard 2D camcorder when 3D isn't needed.
The "entry level" professional 3D solution is the $2120 Panasonic HDC-Z10000 – which is essentially Panasonic's pro AG-AC90 with a permanently attached 3D lens. This one is pretty far above your $1000 price point, though.
Hope this is helpful!