DIY connectors for a VOLEX power cable

Am experimenting with cheapy Volex 17604 PCs- though they have (garbage) computor-type connectors.

So looking for low-med priced connectors - nothing expensive as these are $10.00 cables... before you laugh these cables are Giant Killers..

I've owned $2000 ones before, and presently have $500 ones today - these compare..almost..and with garbage connectors!!

Any suggestion on some low cost 100% copper connectors