Here's one yall might want to look into. We have a store where I live called Surplus City. As the name suggests, they buy bulk quantities of pretty much everything. Not one off brands, if you know what I mean, but real brands. Anyways, every once in a while they get in lengths of arborists rope. The longest length they sell is 52'. But they have various lengths in between too. Great for making new lanyards, splittails, etc. You have to know what you're looking at, but lets face it...nothing looks like New England Hi-Vee but New England Hi-Vee. I scout this place often. Recently I also scored 35' of Bee Line. YESS! All at only 55% of catalog list price /foot. I asked why so cheap and they said they sell it by the weight not by length.
I don't know where you live, but I'm sure that you probably have just such an establishment near you. Visit them frequently. But as I've said before, Know What You're Looking For! I'm not responsible for you...you are. Happy hunting.