I have dismantled 2 palettes so far. I got them for free from work. We get a lot of them and those 2 looked better than most. I still have another 3 I left at work for later.
It is painful to dismantle the pallets. The first one I removed every nail and got longer boards.
The second one I pulled my jigsaw and cut between the support and got shorter runs.
I use them for hidden elements in project and also for trying piece for router setup and such.

Abbas, Castro Valley, CA