dual keres prime rush price is lower than other prime equipment and im not sure if its a bug

[mk1-bo.GOD]

dual keres prime seems to cost 10p to rush instahead of the usual 50p for prime items if this is a bug you should deduct the 40p from my account
https://imgur.com/gallery/sorvcHe

[(PSN)LadyAmbush]

I thought 50 to rush.was only warframes not weapons. Because of the less time required to craft.

I see the photo linked yeah that is off huh. 

[mk1-bo.GOD]

they are 50p for prime and usually 25-35 for non prime