27-inch 3.2GHz 5K iMac on sale for $1699, save $100
Amazon also has the 27″ 3.2GHz (1TB HD) 5K iMac available for $1699.99 including free shipping.
Their prices are the lowest price available for this model from any reseller.
Links above take you to retailer's website. MacPrices is a verified Apple affiliate.