Probably not. They retail for $249 http://www.amazon.com/exec/obidos/ASIN/B0007TFLLC/ Although it has been slightly cheaper http://www.gottadeal.com/DirectDeal/12432
I would probably use mine 99.99% in the car so external powered isn't that much of an issue. For me it boils down to which is more functional, has better software and the most comprehensive maps.
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