Price seems reasonable to me, considering the fact that the prop is made in America. It seems like EFX is ditching unreliable Chinese manufacturers as they have been the main culprit behind substantial delays on all prop replicas. It looks like EFX found a stable and consistent manufacturer of these props at home, albeit the high pricing. Please try to remember, the price advantage is completely gone for EFX, as American labor is EXTREMELY EXPENSIVE over MANY FOLDS relative to Chinese labor and we are only talking about labor here. Most likely, direct materials cost would have increased substantially too, if they are all provided for, by American suppliers.
EFX is trying to tackle its delay problem by finding a US partner here. It's not like EFX is bringing all its manufacturing operations here back to the US for all replica lines. Also, Rey's dark lightsaber is far more intricate than "made in UK" Propshop's 3-D Printed Kylo Ren's or Rey's lightsaber (and they charged crazy amount for those), so once again, it appears that EFX's pricing is far more reasonable if we put all these facts into consideration.