i doubt it would be worth it, im thinking maybe like 2k, 3k gold for mines, all in all if you buy direct would run you, a whopping $5, you could buy lunch for that.like "0-300 Blacksmithing" for ?15 and if someone buys it they get all the mats required to level BS from 0-300 mailed to them in game?
not sure it's worth while, selling gold would give a bigger market and less hassle I think.