the PPE relates to all costs relating to the pearls, including:
D orbit costs
different gomspace costs (this is where more transparency is needed on the gomspace contract to know what sort of progression payments there are, milestones etc)
probably some downpayment to virgin
to suggest that the $7m spent to 30/6/18 is purely for construction costs is false - how can they construct it before CDR was completed in October??
feel free to ask the company yourself