Ion Mount Pleasant SC Homes & Real Estate For Sale MLS Listings Data: IonTotal Listings:16Average Price:$2,980,188Highest Listing Price:$4,450,000Average Days On Market:113Houses For Sale Ion subdivision Mount Pleasant SC. MLS real estate listings for sale in Ion Mount Pleasant SC by price, street, age, list date, bedrooms & more Ion Mount Pleasant SC. Currently, Ion in Mount Pleasant SCÂ has a total of sixteen listings on the local MLS for sale with an average price point of $2,980,188, the max being $4,450,000 and the lowest priced house $1,895,000. The neighborhood of Ion subdivision in Mount Pleasant SC has an average house size of 4,016 sq ft and the average days on the market in this community is 113. RelativeSort by Year Built: low to highSort by Year Built: high to lowSort by price: low to highSort by price: high to lowSort from oldest to newestSort from newest to oldestSort by status: active to under contractSort by status: under contract to active Saving Subscribe Unsubscribe Loading...