All of the heated/ventilated housings I found last year were at least $200-300. That's a good price on those Pelco's.
Thanks for the link! I didn't realize this place had them for such great prices. It's probably not worth it to even try the ebay ones for the price difference.
Put the camera up and see if the sunlight ever hits the lens directly. If it doesn't, you'll probably be fine. If it does, either go the tinting route (mirror tint might work well also), or extend the hood over the front of the housing with something. It would also probably work better with a curly mustache attached below the lens.