If you like the idea of free fuel as much as I do, here's something to consider ...
I collect pallet wood from a couple of local companies and cut it up for firewood.
I tend to collect it quicker than I can cut it up and have occasionally had a yard full of the things which are both an eyesore and also may suggest my interest in prepping. I acquired a 'Pallet Stripping Bar" last year and it really is great!
Basically it is a very robust crow bar like tool with 'u' shaped heads of different size at either end which fit precisely under the stringers of pallets and with little effort this tool produces maximum leverage to break the pallets apart.
Have a look for yourself at this You Tube clip:
http://m.youtube.com/#/watch?v=ipQLy-0Pfag
I break up the wood and stack it discreetly and cut it when I can. It has made the process so much quicker and easier for me especially as I can cut the wood on a workbench whereas before it was backbreaking work.
I paid £45.00 and £11.00 postage ... It's one of the best things I ever bought! (note to self ... Must get a life!).