My local scrap yard get aluminium offcuts from I know not where but one bit was 18" by 12" by 10", I kid you not. I almost invested then thought- how the hell will I cut the chunks I want off this???
So bought some 2" thick instead, plus some 1/2" and 1" for the "come in handy sometime pile". He didn't have much rod in at the time so might go back this weekend.
He's great for steel but sometimes the bargain bits are a bit harder than you think. Gone through a couple of 4" dia slitting saws to find that out. Then left a bit at red heat in a mates coal fire overnight. That helped considerably. Unfortunately that was after the event...
Mind you got some practice on the tool and cutter grinder. Result was 1 Japanese throwing star type disc ( no use for anything else) but after that and a few hours practice 2 sharp(ish) cutters again. Some days you're the statue and other days you're the pigeon, that was definitely a statue day!
Think it's supply and demand re pricing but steel does seem very "reasonable" currently.