What is pallet lumber
Bill Tindall, E.Tn.
To answer your question, crow bar.
Lumber grades go in descending order 1sts, 2nds, 1 common, 2A and 2B, and 3. There are hardwood lumber markets where the wood will be used in some finished state for all but 3. 3 Common always is sold for pallet lumber or chipped for pulp.
Lumber is sawed so as to "box the heart" (see my discussion of how lumber is sawed in Articles). The 3 common grade will be sawed from the boxed heart with so little yield that there is no commercial application for it beyond mixed species pallet lumber. Last I knew it sold for about $300/1000 bdft.
So what do you have in a pallet- 3 Common, undried wood with nail holes every few inches. Along for the ride may be enbedded rocks and other junk from its use as a pallet (who knows where pallets have been) and the risk of a broken off nail hidden within.
An example of what my Uncle Willy, the sage, would describe as "Using a dollar and twenty nine cent jack knife for skinning a fart to save a scent" (you have to say it out loud to get it). (1950's prices)