Reaction Engines’ Sabre Rocket Engine Demo Core Passes Review

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Originally Posted by JG54

According to figures released in 2011 -12, £650 / KG.

SpaceX are currently around $2,700 - 3,000 / KG on an expendable Falcon 9 for comparison.

So, you could expect that price to triple for a 'real life' figure and still be very competitive.