If the price is right they wont ask questions they will just buy more

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IMO when your setting up a account it should go like this........
1st toon minning/herb
2nd toon blacksmithing/jc
3rd toon inscription/tailoring
4th toon engineering/skinning
5th toon leatherworking/alchemy
covers all but enchanting and you make good gold well your leveling up. I would say sell as least as possiable till you get your first 3 toons to 525 so you can really start making some gold.