The razorstone is better than any Sephis Axe I've seen so far. It's only 14^50 and the req is 12 so I..doesn't mean you have to..would salvage for the +30.
I may not know much about pricing, but anyone who recommends salvaging a max dmg 14^50 Sephis Axe because it has a requirement of 12 Axe Mastery must have his head screwed on wrongly. Requirement could be 13 for the axe and it could still be worth around the region of 100K to the right buyer.