Is there a difference between Blacksmith and Tinker "Rock Hammer" rewards?

DeathBringer

Besides one being significantly more expensive than the other?

Cinderella

no, they both have 350 charges

in my experience
it is easier to get the tinkering one
just bribe up silverware (knives, spoons, forks)
which are 100% exceptional when crafted

if doing blacksmith I like to turn them in for POF

Pawain

The one from the store works a lot better.