Like the undergarments, it "Depends".

I live a heckuva long ways from South Dakota, and I don't want to drive out there and NOT have a place to shoot, so I use a guide service. I try to get "the package deal" they offer, as it's usually the best price.
Last trip, it cost each of us $475, for three nights lodging, all meals (and we ate like KINGS!) and two days shooting. We also tipped the guide $20 each day, and had to buy our licenses on the Rosebud, which was $42, if I remember right. It's a heckuva lot cheaper than a trip to Florida....................
I've used a service on the Rosebud proper, it cost $375 for two days shooting and three nights lodging, food NOT included, and it was a pain to find a place to eat without driving 50 miles one way, and we still had tips and licenses to buy, so overall, the the "new" place was about the same, dollar wise. Nicer accomodations, too.
You can spend more, or a lot less, depending on where you go. I went with a guy who goes to SD on one trip, OK on another, and CO on yet a third trip, (he's retired and gets around a LOT), he thinks the SD trips are a bargain. As with anything, shopping around is the key. Check in The Varmint Hunter Magazine, or online, for good deals, or check out the official VHA website and they might have some tips for you.
I ain't giving out my honey hole, last time I did that, I got crowded out completely.

We didn't shoot as much ammo as on previous trips, but we killed a lot more dogs (conditions were better, less wind) and we each shot perhaps 200 rounds a day, maybe a bit more. It varies with the service, we were a bit late in the year, and the towns HAD been shot on previously) That's the rub, you can go out mid May, and MAYBE the weather will be kind, or it might snow on you, or go out in mid June, and get burnt up in 100+ degree heat. You never know about SD weather.