The official Canon USA store has a refurbished Powershot sale that includes the SX400 IS for $80 in black or red, and the refurbished SX600 HS in red only for $90. They come with a 1-year Canon warranty.
The G X series is on page #2 of that page, the refurbished G7 X for $480, the refurbished G1 X II for $550, and the refurbished G1 X for $270.
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