I guess if they were combined the price would be much higher. Although they look similar the hardware is different. The XW-G1 is priced much higher than the XW-P1, it is $799
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Where did you get the idea that the XW-G1's street price is $799?
The XW-P1's list price is $699,with a street price of $499...so the XW-G1's list price of $799 is going to translate to $599.
Besdies which,the street price of $599 for the XW-G1 has been confirmed by Mike Martin,who works for Casio.