I need an External Bluetooth GPS

Which GPS should I get? Will it be here in time for Seapac at Seaside? Is there anyplace to buy it locally?

• http://www.semsons.com/ib737blgps32.html
• US GLOBAL BT-338 at Amazon

Amazon is promising. Could they get a GPS across Lake Washington in a mere three days? Probably not an issue as it probably isn't shipped from Seattle any way.