Holux GM-210 GPS Holux GR-212 Xtrac Waterproof GPS Navisys GR-300 SiRF III USB GPS Dongle (4 ft Extension Cable included) (Supports Windows, Mac, Linux) Holux M-215 USB GPS Receiver(MTK Chipset, WAAS) GlobalTop GMR75 USB GPS Receiver (32 Channels, WAAS) Royaltek RGM-3600 SiRF III USB GPS Receiver Regular price: CA $79.95 Sale price: GlobalSat MR-350P Bulkhead GPS Receiver + USB Data Cable Bundle (Waterproof, WAAS Enable. MR350 + BR305-USB2) Regular price: CA $104.95 Sale price: Globalsat ND-100 USB GPS Stick Dongle (WAAS enabled, Windows, Mac, Linux Compatible) Regular price: CA $89.95 Sale price: Holux GR-213 SiRF Star III Waterproof GPS