It is not generally good to use a stereo mic on a camera because any movement shifts the stereo field in disturbing ways. If the camera is locked, fine. But if you intend on panning, zooming, getting crowd cutaways, in other words, shoot interesting video, stereo should be avoided. You can sometimes pick up the beyer MCE87vs on ebay for less than $100, which is a great price as it retails for like $389US.
Good Luck,
Best,
John