You can go out to their Recycling skip out the side of the building and procure as many of these things as you like as it empties the bin for them.
I used to go in there on a daily basis when we were moving house and just pulled boxes from Honda's, Rovers and Victa's, actually I still have a few that I never used that are still flat packed on my outdoor table in the shed with a whole lot of soft packing stuff sitting on top.
Maybe I'll be in for Thousands of dollars some day when I put them all up on eBay ?...................Nah ! I don't tink zo.