It may be worth 3 figures (around $100) now, until the new buyer figures out he just got burned and it's actually worthless. The value of 6n with 4's in it will actually go lower over time, not higher. This is probably the peak of selling anything with a 4 in it. Whatever you get now to the unaware American buyer, it will probably be the best you will ever get. Keep in mind, our Chinese friends have created this game and the rules to it.
Having said all of that, when I first started in numerics, I got stuck with some 4's myself, until I figured it out. So i too am sitting on potentially worthless domains. Just want you to know I'm not picking on anyone as I'm also included in the mistake of getting 4's myself. The only buyers for those will be newbie American buyers who have no clue, but there's a big market with those types as they keep coming in the game, thank God. Keep the morons coming in, is what I say. I have a few I would like to dump.