[kuschku]

Expensive?

https://www.amazon.com/dp/B07DCXKNXQ/

That's 60ct a piece. Rated for 250V 10A.

You can just buy any cheap cord like https://www.amazon.com/dp/B003MGB0IK/ to connect to it.

There's no excuse for suicide cables.

[drewzero1]

That's an IEC inlet... I think OP is referring to something specifically intended as a generator inlet, like this: https://www.homedepot.com/p/Reliance-Controls-30-Amp-Power-I...

Not impossible to get, but certainly a bit more expensive.