Category Events - United States, Platteville (WI) Say hello to a good buy by shopping area garage sales! Planning on hosting a sale? Add it online at no cost. Planning on shopping sales? Search the sales and plan your route. Visit https://www.dupaco.com/GarageSale for more information. This community-centric event is made possible by Dupaco Community Credit Union, The Platteville Journal, Xtreme 107.1, and the Platteville Regional Chamber.