Ski lift prices aren't out yet Spook. I'll be updating the main site as soon as they do - usually around October - so not far away. There likely won't be much change from last year, if any.
If you're going to ski/board most days the Big 4 Pass is the way to go. If if you only use it 20 days that's still only Y3,000 a day. If you only board every other day the value becomes marginal.
If you go to the resort pages there's usually links to discount lift coupons. Only good for last year at present but will also update asap.
Just put up a meet-up thread for crew coming to Myoko:
http://myokokogen.net/forum/index.php?topic=94.0 