There's a few little ways to get them. Unfortunately, the Mods probably wouldn't be too happy if I just started rattling off websites and things like that.
It took me a long time and a lot of searching to find out how to get ahold of them. I started with trading weeds through a snail mail group and then moved on to a trading hub. And the only one I ever paid for was the very first one I ever bought, because I didn't know that the majority of people out there who are preparing these boots for circulation are doing it for the music trading community, not to turn a profit on something that is not their work.
Everything else i have has been free, the way it should be. Never ever pay for boots!
PM me if you want more info.