About the only way to score a "cheap" D60 or 1 ton axles around here,is to keep tabs on any municipal auctions,and hope a local fire department or DPW is having a few old trucks get auctioned off...but many guys do just that,and often have the trucks "bought" well in advance,since they have connections at the FD or town hall,etc,and know well in advance when such vehicles might be going up for dibs..
Sometimes you'll see a contractor selling off an old square body 1 ton or crew cab,but most of them are wise to what the parts are worth too--junkyards seldom give any deals on 1 ton axles here,and once in a while you'll find a whole truck thats rotted to death thats cheaper to buy "whole",than just the axles,after a salvage yard gets hold of it...
Scrapyards here also crush everything almost instantly,they no longer let you roam around looking for treasure,"insurance regulations" prohibit non-employees from entering beyond the gates for anything other than dumping off a load of scrap...once anything gets beyond the gates,its history...unless you can bribe an employee to sneak something out for you,which doesn't happen often ,even for their "friends"..