No, you're still missing it.
500K is a _lot_.
Runaway success unless you're:
A) Apple
B) Samsung
The 350K product I'm referring to defined a whole category for years and is universally well-known in tech.
To be 100% clear, next time you see "500K sold", your decision tree is:
Is it Apple? If yes, can be disagreeable whether it is well-known / successful.
Is it Samsung? If yes, can be disagreeable about whether it is well-known / successful.
Still here? It's well-known and successful, you'll look silly if you choose to be disagreeable.