"A bulk pack of locks where you're paying for eight and hoping all ten work."
The '4-digit stainless steel disc lock' means it has 10,000 possible codes and a shackle that's shielded from bolt cutters. This deters casual theft, but says nothing about the quality of the internal tumblers, which are the real weak point.
This 10-pack is for buyers who need a large quantity of visually deterrent locks for low-consequence applications, such as a storage facility owner reselling them to tenants. The business model must be able to absorb the cost of defective units.
Anyone securing valuable items or requiring dependable access should avoid these. The cost savings are negated if even one lock fails, either by jamming shut or not securing properly. If you need nine locks, buy nine reliable ones, not a 10-pack of these.