I have a PM Gear Double Trouble ski bag -- designed by a ski racer to hold two pairs of skis, poles and lots of other stuff. Very long bag (for race skis, of course), with wheels. I pack one pair of skis and poles and lots of ski equipment in it to just about 48 pounds. I put the boots, helmets and other stuff in another bag, packed to about 48 pounds.
I have looked at shipping equipment out, rather than taking on the plane, and it is very expensive.