Campgrounds Grand Rapids Mi

Can anyone help me find a campground?
My sister and i are going camping the third to last week of July…we like to stay in a different place every time…and i should mention we like to find the very cheapest but still nice places. Looking for something under 21 a night for a nice tent site (preferably w/ electric) that is less than an hour or so from Grand Rapids, MI. If anyone knows a place if you could post the site, or let me know otherwise i would appreciate it…thank you very much
Green Peaks is good but 25 a night,.
2010 Keystone Sprinter 276RLS Walkaround with American RV Grand Rapids MI