I'm waaaaay out of my lane here, but I love to learn.
So the High1 Resort seems to be offering (or maybe this offer is expired?) early-bird packages. It looks like prices start at 140,000 Korean won (about US$ 105) for room and lift tickets for two. (But definitely check with them -- I don't speak a word of Korean.)
I had to look up the resort. Looks like it's 13 lifts and 20 trails. The pics make the runs look fairly long.