PS4 and Xbox One combined sales will reach 30 million units by March 2015, Ubisoft says - GameSpot
Titanfall boosts Xbox One sales by 96 per cent in the UK | Eurogamer.net
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Amazon.com: Xbox One 500 GB Console - Black [Discontinued] : Video Games
PlayStation 4 sales double that of Xbox One in first year | BetaNews
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Xbox One slowly narrows its quarterly sales deficit against the PS4 [Updated] | Ars Technica
What Sony's '4.2 Million PS4s Sold' Figure Actually Means - IGN
Xbox One leads US software game sales in January, nearly 740 million hours of fun since launch - The Official Microsoft Blog
Spencer: Microsoft almost abandoned Xbox brand after the Xbox One launch | Ars Technica
Xbox Series X|S vs Xbox One Launch Sales Comparison Through Week 13
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Analysis: Worldwide PS4 sales at least 40 percent better than Xbox One [Updated] | Ars Technica
Global Xbox one console unit sales 2013-2017 | Statista
Microsoft cagey on Xbox One sales, after 1.2 million shipped in 2014 | Metro News
Microsoft Reveals 3 Million Xbox One Sales In 2013
PlayStation 4 sales beat Xbox One sales in 2013 - CBS News
NPD January 2014: PS4 Almost Doubles Sales Of Xbox One | TheSixthAxis
PlayStation 4 and Xbox One sales: will 2014 boom, or bust? | Games | The Guardian
Sony PS4 Is Well Ahead Of Microsoft Xbox One In Worldwide Sales Since Launch - MSPoweruser
Microsoft Xbox Crushes Sony PlayStation Sales This Black Friday Season - MSPoweruser
Global Xbox one console unit sales 2013-2017 | Statista
Xbox One Available for $349 Starting November 2; Up to $150 in Savings - Xbox Wire
Global Xbox gaming consoles unit sales 2021 | Statista
Xbox One X: Microsoft Fights Back in Booming Console Market | by Newzoo | Medium
Xbox One sales double in US after Kinect ditched | Games | The Guardian
PS4 vs Xbox One Sales: Sony Dominates Microsoft in First Quarter 2014
