Originally Posted by
mikesaidyes
I don't believe Korean Air allows paid entry any more. Some issue a while ago that officials felt that "paying for entry" meant the lounge was a "restaurant" and had to follow certain rules. The website doesn't say anything. IF You can even do it - i'd expect 30-50$ max. They also used to allow a ton of PP card holders etc. etc. but have trimmed that down.
I think you can use Skypass miles for lounge access. Whether it is wise use of miles is another matter.
BTW, KE ICN T2 lounge is no longer a Priority Pass lounge. If OP is Morning Calm, guest can use Morning Calm lounge access.