Where can I buy scrap metal online at reasonable rates?

Has anyone here actually bought scrap metal online?

I’ve been trying to find a decent spot to source small or bulk quantities without having to chase different scrapyards all week.

I stumbled across this site called ScrapTrade.com.au; looks like they’ve got listings for different types of scrap (copper, aluminum, brass, steel, etc.) and you can connect with local buyers/sellers. Haven’t used it much yet but it seems pretty straightforward compared to most yard websites.

Just curious if anyone else here has tried it or knows other legit places to buy scrap online in Aus or global. Keen to hear what’s worked for you.