Summary for Galloway. Average price per square foot for Galloway NJ was $93, a decrease of 7.9% compared to the same period last year.The median sales price for homes in Galloway NJ for Jul 15 to Sep 15 was $135,000 based on 5 home sales.he average listing price for homes for sale in Galloway NJ was $211,532 for the week ending Sep 30, which represents an increase of 2.1%, or $4,301, compared to the prior week. Schools in Galloway.