Perhaps he should not keep his gear maintained and not be setting money aside for the nessary updates on new gear that people will want him to have in about a year or two. NOT!
Well, if the cinematographer rents his cameras and equipment himself, the professional versions of those tools tend to cost at least $500 at day as a package for him (and that's just with using things like T2i's, lenses, and equipment - just to rent a Red One it's $1,000 if you find it cheap). He has to make the amount of money back that he spends and a little more, or else he's throwing his own money out the window - he'd probably willingly throw it out the window if he got the chance to work on a Hollywood film instead of local things, but he probably wouldn't do that for a church production unless he's a very religious person who wants to donate for the cause. Chances are, $1,000 a day is not far off from very realistic.
But in my opinion, he could go much lower - I'd bet that he already owns his own equipment (with it paid off a billion times over) and is even probably using outdated equipment. When a cinematographer gets to this "outdated/paid off" point, they should be earning minimum wage like everyone else + whatever money they spend for gas, and rentals. I really doubt that any sort of local cinematographer is going to give you results that are worth $1,000 a day, they'll probably be worth more around $500 at most - I'd ask him to explain his equipment package (check for outdated cameras) and get him to explain the equipment he's putting forth and "how long" he's had the experience with that equipment (a good alternative question to "how long have you owned it?"). Chances are, he's charging 2x or 3x what he should be earning just because other baffoons clients in the town will fall for it.
Then again, who knows, maybe you snagged someone really talented and they have a super-filled schedule that only $1,000 can "break up". If he's not exactly clustered with projects though, most likely you can talk him down to something reasonable.