Write the exact price you want to sell your cards. You’ll be able to negotiate later on.
A sale is not an exchange nor an auction, the buyer has to be able to buy it at the price written in the subject.
It's kind of hard to give an exact price, specailly when I don't really know the value of a 0 exp Korr, I guess if I had to look at market value. I would take a fully leveled Korr with 100k.
I will say as for trade I would love to have my three ladies:
I hope that is more helpful.