We camped at Sauble Falls and Inverhuron 2 weeks ago and have been several times in the past. Really enjoy it there, large private sites and lots to do in the area. We were in the newer section (Holmes Bay) with a nice pull thru site.
Gunn Point is the closest to the main sandy beach and is an easy walk. There is a trail along the waterfront that connects from all the campgrounds. You can access the water from any point along the trail too but it is rocky except for the beach area. The water was perfect.
Provincial parks have the same fees so price will be the same as Sauble Falls unless you were at a private campground. As for any PP make a reservation well ahead.
'17 Ram 2500 Crewcab Laramie CTD
'13 Keystone Bullet Premier 310BHPR
Hitched by Hensley