GuitarBizarre

Try stewmac. Theres also an allparts distributor in the US.

Other than that, find a local timber merchant. They'll usually be able to thickness and size a blank for you for not much, although obviously you'll need to be specific about what its for to avoid getting knots etc.

Edit: Just checked my suggestions...Warmoth are cheaper than both of those places. I think you might have already found the best deal.

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