After months of leaked rumors and speculation, Apple (AAPL) will officially unveil the iPad mini on Tuesday, October 23rd. In terms of price, rumors have persisted that the tablet would go head-to-head with competing 7-inch tablets such as the Google (GOOG) Nexus 7 and Amazon (AMZN) Kindle Fire HD, selling for between $249 and $399. But according to 9to5Mac’s sources, Apple will reportedly sell the iPad mini starting at $329 for a WiFi model. Additional models with either 3G or 4G LTE antennas will cost an extra $130. Listed below is the “likely” pricing matrix that 9to5Mac believes Apple will announce on October 23rd.