Hi
I shipped my bike out to Canada and Rode to Sturgis in 2007, if you are looking at hiring the costs goes through the roof over that period (always the first full week in August)
The main campsite is Buffalo, again high costs, I stayed at a campsite that was an over spill of that site (by the same owner) I payed $18 a night to camp there, the main site was $450 for the week, but obviously you don't get the entertainment included if you stay outside or free beer
, but there was a free bus service to downtown Sturgis every night
Sturgis effects the whole area around there so even if you find a B&B 60 miles away you will still be amongst it, just pick anywhere in The Black Hills to stay
If you want to know anything else, just let me know
Graham